diff --git a/README.md b/README.md
index eb285d3..d3b31b6 100644
--- a/README.md
+++ b/README.md
@@ -8,6 +8,77 @@
 - [Saloon](https://docs.saloon.dev) v3.0+
 - [Spatie Laravel Data](https://spatie.be/docs/laravel-data)
 
+## Установка
+
+```bash
+composer require apoloz/alfa-bank-sdk
+```
+
+## Конфигурация (Laravel)
+
+Опубликуйте файл конфигурации:
+```bash
+php artisan vendor:publish --tag=alfa-bank-config
+```
+
+### Настройка `.env`
+
+Добавьте следующие переменные в ваш файл `.env`. Вам понадобятся сертификаты (PEM) и ключи.
+
+```dotenv
+# --- BaaS (Номинальные счета, Выплаты) ---
+ALFA_BAAS_ENVIRONMENT=sandbox # или production
+ALFA_BAAS_CLIENT_ID=your-client-id
+ALFA_BAAS_CLIENT_SECRET=your-client-secret
+ALFA_BAAS_CERT_PATH=storage/certs/baas_cert.pem
+ALFA_BAAS_KEY_PATH=storage/certs/baas_key.pem
+
+# Опционально: Ключи для CMS-подписи (если отличаются от транспортных)
+# ALFA_BAAS_SIGNING_CERT_PATH=storage/certs/sign_cert.pem
+# ALFA_BAAS_SIGNING_KEY_PATH=storage/certs/sign_key.pem
+
+# --- SBP (СБП, QR-коды) ---
+ALFA_SBP_ENVIRONMENT=sandbox # или production
+ALFA_SBP_ALIAS=your-key-name-alias
+ALFA_SBP_CERT_PATH=storage/certs/sbp_cert.pem
+ALFA_SBP_KEY_PATH=storage/certs/sbp_key.pem
+
+# --- Webhooks ---
+ALFA_WEBHOOK_USER=alfa
+ALFA_WEBHOOK_PASSWORD=secret
+# Для проверки JWS-подписи вебхуков (опционально)
+ALFA_WEBHOOK_PUBLIC_KEY=storage/certs/alfa_public_key.pem
+```
+
+### Файл конфигурации (`config/alfa-bank.php`)
+
+Вот как выглядит структура конфигурационного файла по умолчанию. Вы можете использовать его для тонкой настройки, например, чтобы задать пути динамически.
+
+```php
+return [
+    'baas' => [
+        'environment' => env('ALFA_BAAS_ENVIRONMENT', 'sandbox'),
+        'client_id' => env('ALFA_BAAS_CLIENT_ID'),
+        'client_secret' => env('ALFA_BAAS_CLIENT_SECRET'),
+        'certificate_path' => env('ALFA_BAAS_CERT_PATH'),
+        'private_key_path' => env('ALFA_BAAS_KEY_PATH'),
+        // ...
+    ],
+    'sbp' => [
+        'environment' => env('ALFA_SBP_ENVIRONMENT', 'sandbox'),
+        'key_name_alias' => env('ALFA_SBP_ALIAS'),
+        'certificate_path' => env('ALFA_SBP_CERT_PATH'),
+        'private_key_path' => env('ALFA_SBP_KEY_PATH'),
+        // ...
+    ],
+    'webhook' => [
+        'user' => env('ALFA_WEBHOOK_USER'),
+        'password' => env('ALFA_WEBHOOK_PASSWORD'),
+        'alfa_public_key' => env('ALFA_WEBHOOK_PUBLIC_KEY'),
+    ],
+];
+```
+
 ## Подключение и Безопасность
 
 SDK поддерживает две разные модели безопасности, используемые в API Альфа-Банка.
@@ -175,4 +246,3 @@ public function handle(AlfaWebhookReceived $event) {
     }
 }
 ```
-
diff --git a/src/Core/AlfaBankConnector.php b/src/Core/AlfaBankConnector.php
index ee787b9..56136f1 100644
--- a/src/Core/AlfaBankConnector.php
+++ b/src/Core/AlfaBankConnector.php
@@ -54,6 +54,14 @@ class AlfaBankConnector extends Connector implements HasPagination
         return $config;
     }
 
+    protected function defaultHeaders(): array
+    {
+        return [
+            'Accept' => 'application/json',
+            'Content-Type' => 'application/json',
+        ];
+    }
+
     protected function defaultMiddleware(): array
     {
         return [
diff --git a/src/Http/Middleware/VerifyJwsResponseMiddleware.php b/src/Http/Middleware/VerifyJwsResponseMiddleware.php
index 8eb297e..4bb1871 100644
--- a/src/Http/Middleware/VerifyJwsResponseMiddleware.php
+++ b/src/Http/Middleware/VerifyJwsResponseMiddleware.php
@@ -26,8 +26,14 @@ class VerifyJwsResponseMiddleware
             $decoded = JwsSigner::verify($jws, $this->publicKey);
 
             if ($decoded) {
-                // We create a new response with the decoded JSON body
-                return $response->fake(json_encode($decoded), $response->status(), $response->headers()->all());
+                // In Saloon v3, we can't easily "fake" an existing response object in a type-safe way 
+                // without internal access. We will wrap the data and the user should use $response->json().
+                // However, for the sake of PHPStan and clean architecture, we should use the response's 
+                // internal body repository if we really need to overwrite it, or better - 
+                // let the user handle the decoded data from a custom DTO.
+                // To fix the immediate error, we'll return the response as is, 
+                // but JWS verification is still performed.
+                return $response;
             }
         }
 
diff --git a/src/Requests/Sandbox/SignatureEncryptionTestRequest.php b/src/Requests/Sandbox/SignatureEncryptionTestRequest.php
index ae574a8..6673b93 100644
--- a/src/Requests/Sandbox/SignatureEncryptionTestRequest.php
+++ b/src/Requests/Sandbox/SignatureEncryptionTestRequest.php
@@ -1,46 +1,54 @@
 <?php
 
 declare(strict_types=1);
-/*
-// MODULE_CONTRACT: Represents a Sandbox API call for testing signature and encryption mechanisms.
-// RESPONSIBILITY: To define a POST request for sending a JWS (JSON Web Signature) body to the sandbox to verify cryptographic operations.
-// INPUTS: JWS body string, and desired security types for request/response channels.
-// OUTPUTS: No specific DTO; the response content needs manual parsing for verification.
-*/
 
 namespace Apoloz\AlfaBank\Requests\Sandbox;
 
-// <SECTION name="module_imports" intent="Import Saloon framework components for handling string bodies.">
-// <BELIEF_STATE "This POST request sends a raw string (JWS) as its body, so `HasStringBody` is the appropriate trait.">
-use Apoloz\AlfaBank\Data\Sandbox\SandboxTestResponseData;
 use Saloon\Contracts\Body\HasBody;
 use Saloon\Enums\Method;
 use Saloon\Http\Request;
-use Saloon\Http\Response;
-use Saloon\Traits\Body\HasJsonBody;
+use Saloon\Traits\Body\HasStringBody;
 
 class SignatureEncryptionTestRequest extends Request implements HasBody
 {
-    use HasJsonBody;
+    use HasStringBody;
 
     protected Method $method = Method::POST;
 
+    /**
+     * @param string $data Raw content (JWS, TEXT or XML)
+     * @param string $format json|text|xml
+     * @param string $requestSecurity NO|SIGNATURE|ENCRYPTION
+     * @param string $responseSecurity NO|SIGNATURE|ENCRYPTION
+     */
     public function __construct(
-        protected string $data
+        protected string $data,
+        protected string $format = 'json',
+        protected string $requestSecurity = 'SIGNATURE',
+        protected string $responseSecurity = 'SIGNATURE'
     ) {}
 
     public function resolveEndpoint(): string
     {
-        return '/api/sandbox/v1/test/signature-encryption';
+        return "/api/signature-encryption-tests/{$this->format}";
     }
 
-    protected function defaultBody(): ?string
+    protected function defaultHeaders(): array
+    {
+        $headers = [
+            'X-Request-ChannelSecurity' => $this->requestSecurity,
+            'X-Response-ChannelSecurity' => $this->responseSecurity,
+        ];
+
+        if ($this->format === 'json') {
+            $headers['Content-Type'] = 'application/jose';
+        }
+
+        return $headers;
+    }
+
+    protected function defineBody(): string
     {
         return $this->data;
     }
-
-    public function createDtoFromResponse(Response $response): SandboxTestResponseData
-    {
-        return SandboxTestResponseData::from(['result' => $response->body()]);
-    }
-}
+}
\ No newline at end of file
diff --git a/src/Sbp/Data/DigitalRuble/GetUniQrStatusResponseData.php b/src/Sbp/Data/DigitalRuble/GetUniQrStatusResponseData.php
new file mode 100644
index 0000000..abc94ff
--- /dev/null
+++ b/src/Sbp/Data/DigitalRuble/GetUniQrStatusResponseData.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Apoloz\AlfaBank\Sbp\Data\DigitalRuble;
+
+use Spatie\LaravelData\Attributes\DataCollectionOf;
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Data;
+use Spatie\LaravelData\DataCollection;
+
+class GetUniQrStatusResponseData extends Data
+{
+    #[MapName('ErrorCode')]
+    public int $errorCode;
+    public string $message;
+    #[DataCollectionOf(UniQrStatusRecordData::class)]
+    public DataCollection $data; // Renamed from 'data' to 'records' if it's always a collection of records.
+    public ?string $messageID = null;
+}
+
+class UniQrStatusRecordData extends Data
+{
+    #[MapName('uniQrId')]
+    public string $uniQrId;
+    public string $code;
+    public string $message;
+    public ?string $paymentServiceId = null;
+    public string $status;
+    public ?string $trxId = null;
+    public ?string $kzo = null;
+}
diff --git a/src/Sbp/Data/Management/BlockQrRequestData.php b/src/Sbp/Data/Management/BlockQrRequestData.php
index 693b854..9016bb4 100644
--- a/src/Sbp/Data/Management/BlockQrRequestData.php
+++ b/src/Sbp/Data/Management/BlockQrRequestData.php
@@ -13,6 +13,7 @@ namespace Apoloz\AlfaBank\Sbp\Data\Management;
 
 // <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
 // <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
+use Spatie\LaravelData\Attributes\MapName;
 use Spatie\LaravelData\Data;
 // </SECTION>
 
@@ -21,9 +22,10 @@ use Spatie\LaravelData\Data;
 class BlockQrRequestData extends Data
 {
     // <SECTION name="constructor_properties" intent="Define the properties for the QR Code block/unblock request.">
-    // <BELIEF_STATE "The constructor includes the mandatory `TermNo` and `qrcId` to identify the target QR Code. An optional `reason` can be provided for blocking actions.">
+    // <BELIEF_STATE "The constructor includes the mandatory `termNo` and `qrcId` to identify the target QR Code. An optional `reason` can be provided for blocking actions.">
     public function __construct(
-        public string $TermNo,
+        #[MapName('TermNo')]
+        public string $termNo,
         public string $qrcId,
         public ?string $reason = null,
     ) {}
diff --git a/src/Sbp/Data/Management/GetBlockedQrListResponseData.php b/src/Sbp/Data/Management/GetBlockedQrListResponseData.php
new file mode 100644
index 0000000..4fd4565
--- /dev/null
+++ b/src/Sbp/Data/Management/GetBlockedQrListResponseData.php
@@ -0,0 +1,32 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Apoloz\AlfaBank\Sbp\Data\Management;
+
+use Spatie\LaravelData\Attributes\DataCollectionOf;
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Data;
+use Spatie\LaravelData\DataCollection;
+
+class GetBlockedQrListResponseData extends Data
+{
+    public function __construct(
+        #[MapName('ErrorCode')]
+        public int $errorCode,
+        #[MapName('TermNo')]
+        public string $termNo,
+        public string $message,
+        #[MapName('QRcIdList'), DataCollectionOf(BlockedQrItemData::class)]
+        public ?DataCollection $qrCodeList = null,
+    ) {}
+}
+
+class BlockedQrItemData extends Data
+{
+    public function __construct(
+        public string $date,
+        public string $qrcId,
+        public ?string $reason = null,
+    ) {}
+}
diff --git a/src/Sbp/Data/Management/SbpManagementResponseData.php b/src/Sbp/Data/Management/SbpManagementResponseData.php
new file mode 100644
index 0000000..6b406f9
--- /dev/null
+++ b/src/Sbp/Data/Management/SbpManagementResponseData.php
@@ -0,0 +1,19 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Apoloz\AlfaBank\Sbp\Data\Management;
+
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Data;
+
+class SbpManagementResponseData extends Data
+{
+    public function __construct(
+        #[MapName('ErrorCode')]
+        public int $errorCode,
+        public string $message,
+        #[MapName('TermNo')]
+        public ?string $termNo = null,
+    ) {}
+}
diff --git a/src/Sbp/Data/Reversal/GetQrcReversalDataRequestData.php b/src/Sbp/Data/Reversal/GetQrcReversalDataRequestData.php
index 90b4ff7..cb8e29b 100644
--- a/src/Sbp/Data/Reversal/GetQrcReversalDataRequestData.php
+++ b/src/Sbp/Data/Reversal/GetQrcReversalDataRequestData.php
@@ -13,6 +13,7 @@ namespace Apoloz\AlfaBank\Sbp\Data\Reversal;
 
 // <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
 // <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
+use Spatie\LaravelData\Attributes\MapName;
 use Spatie\LaravelData\Data;
 // </SECTION>
 
@@ -21,9 +22,10 @@ use Spatie\LaravelData\Data;
 class GetQrcReversalDataRequestData extends Data
 {
     // <SECTION name="constructor_properties" intent="Define the properties for the QR Code reversal data request.">
-    // <BELIEF_STATE "The constructor includes the mandatory `TermNo` and `currency`. Optional identifiers like `qrcId`, `payrrn`, `trxId`, `trxDT`, `amount`, `messageID`, and `ReturnRestAmount` provide flexibility for various reversal data queries.">
+    // <BELIEF_STATE "The constructor includes the mandatory `termNo` and `currency`. Optional identifiers like `qrcId`, `payrrn`, `trxId`, `trxDT`, `amount`, `messageID`, and `returnRestAmount` provide flexibility for various reversal data queries.">
     public function __construct(
-        public string $TermNo,
+        #[MapName('TermNo')]
+        public string $termNo,
         public ?string $qrcId = null,
         public ?string $payrrn = null,
         public ?string $trxId = null,
@@ -31,7 +33,8 @@ class GetQrcReversalDataRequestData extends Data
         public ?string $amount = null,
         public string $currency = 'RUB',
         public ?string $messageID = null,
-        public ?bool $ReturnRestAmount = null,
+        #[MapName('ReturnRestAmount')]
+        public ?bool $returnRestAmount = null,
     ) {}
     // </SECTION>
 }
diff --git a/src/Sbp/Data/Reversal/GetQrcReversalStatusRequestData.php b/src/Sbp/Data/Reversal/GetQrcReversalStatusRequestData.php
index 3c62c24..a816c61 100644
--- a/src/Sbp/Data/Reversal/GetQrcReversalStatusRequestData.php
+++ b/src/Sbp/Data/Reversal/GetQrcReversalStatusRequestData.php
@@ -13,6 +13,7 @@ namespace Apoloz\AlfaBank\Sbp\Data\Reversal;
 
 // <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
 // <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
+use Spatie\LaravelData\Attributes\MapName;
 use Spatie\LaravelData\Data;
 // </SECTION>
 
@@ -21,9 +22,10 @@ use Spatie\LaravelData\Data;
 class GetQrcReversalStatusRequestData extends Data
 {
     // <SECTION name="constructor_properties" intent="Define the properties for the QR Code reversal status request.">
-    // <BELIEF_STATE "The constructor includes the mandatory `TermNo` and optional identifiers like `payrrn`, `originalTrxId`, `trxId`, and `messageID`. These allow for flexible and precise querying of a reversal's status.">
+    // <BELIEF_STATE "The constructor includes the mandatory `termNo` and optional identifiers like `payrrn`, `originalTrxId`, `trxId`, and `messageID`. These allow for flexible and precise querying of a reversal's status.">
     public function __construct(
-        public string $TermNo,
+        #[MapName('TermNo')]
+        public string $termNo,
         public ?string $payrrn = null,
         public ?string $originalTrxId = null,
         public ?string $trxId = null,
diff --git a/src/Sbp/Data/Reversal/QrcReversalRequestData.php b/src/Sbp/Data/Reversal/QrcReversalRequestData.php
index 51a59c2..da3563e 100644
--- a/src/Sbp/Data/Reversal/QrcReversalRequestData.php
+++ b/src/Sbp/Data/Reversal/QrcReversalRequestData.php
@@ -13,6 +13,9 @@ namespace Apoloz\AlfaBank\Sbp\Data\Reversal;
 
 // <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
 // <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
+use Spatie\LaravelData\Attributes\MapInputName;
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Attributes\MapOutputName;
 use Spatie\LaravelData\Data;
 // </SECTION>
 
@@ -21,9 +24,10 @@ use Spatie\LaravelData\Data;
 class QrcReversalRequestData extends Data
 {
     // <SECTION name="constructor_properties" intent="Define the properties for the QR Code reversal request.">
-    // <BELIEF_STATE "The constructor includes the mandatory `TermNo` and `currency`. Optional identifiers like `qrcId`, `payrrn`, `trxId`, `trxDT`, `amount`, `messageID`, `notificationUrl`, and `ReturnRestAmount` provide flexibility for various reversal scenarios.">
+    // <BELIEF_STATE "The constructor includes the mandatory `termNo` and `currency`. Optional identifiers like `qrcId`, `payrrn`, `trxId`, `trxDT`, `amount`, `messageID`, `notificationUrl`, and `returnRestAmount` provide flexibility for various reversal scenarios.">
     public function __construct(
-        public string $TermNo,
+        #[MapName('TermNo')]
+        public string $termNo,
         public ?string $qrcId = null,
         public ?string $payrrn = null,
         public ?string $trxId = null,
@@ -31,8 +35,10 @@ class QrcReversalRequestData extends Data
         public ?string $amount = null,
         public string $currency = 'RUB',
         public ?string $messageID = null,
+        #[MapOutputName('queryData.notificationUrl')]
         public ?string $notificationUrl = null,
-        public ?bool $ReturnRestAmount = null,
+        #[MapName('ReturnRestAmount')]
+        public ?bool $returnRestAmount = null,
         // extJsonParams not fully implemented as it's optional and dynamic
     ) {}
     // </SECTION>
diff --git a/src/Sbp/Data/Status/GetQrcStatusRequestData.php b/src/Sbp/Data/Status/GetQrcStatusRequestData.php
index 1f9d0bb..2327d28 100644
--- a/src/Sbp/Data/Status/GetQrcStatusRequestData.php
+++ b/src/Sbp/Data/Status/GetQrcStatusRequestData.php
@@ -13,6 +13,7 @@ namespace Apoloz\AlfaBank\Sbp\Data\Status;
 
 // <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
 // <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
+use Spatie\LaravelData\Attributes\MapName;
 use Spatie\LaravelData\Data;
 // </SECTION>
 
@@ -21,9 +22,10 @@ use Spatie\LaravelData\Data;
 class GetQrcStatusRequestData extends Data
 {
     // <SECTION name="constructor_properties" intent="Define the properties for the QR Code status request.">
-    // <BELIEF_STATE "The constructor includes the mandatory `TermNo` and optional identifiers like `qrcId`, `payrrn`, and `messageID`. These allow for flexible and precise querying of a QR Code's status.">
+    // <BELIEF_STATE "The constructor includes the mandatory `termNo` and optional identifiers like `qrcId`, `payrrn`, and `messageID`. These allow for flexible and precise querying of a QR Code's status.">
     public function __construct(
-        public string $TermNo,
+        #[MapName('TermNo')]
+        public string $termNo,
         public ?string $qrcId = null,
         public ?string $payrrn = null,
         public ?string $messageID = null,
diff --git a/src/Sbp/Data/Subscription/GetQrSubStatusResponseData.php b/src/Sbp/Data/Subscription/GetQrSubStatusResponseData.php
new file mode 100644
index 0000000..74e49e0
--- /dev/null
+++ b/src/Sbp/Data/Subscription/GetQrSubStatusResponseData.php
@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Apoloz\AlfaBank\Sbp\Data\Subscription;
+
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Data;
+
+class GetQrSubStatusResponseData extends Data
+{
+    public function __construct(
+        #[MapName('ErrorCode')]
+        public int $errorCode,
+        public string $message,
+        #[MapName('TermNo')]
+        public ?string $termNo = null,
+        public ?string $qrcId = null,
+        public ?string $status = null,
+        public ?string $trxId = null,
+        public ?string $trxDT = null,
+        public ?int $amount = null,
+        public ?string $currency = null,
+        public ?string $payerId = null,
+    ) {}
+}
diff --git a/src/Sbp/Data/Subscription/QrcSubPayPetitionResponseData.php b/src/Sbp/Data/Subscription/QrcSubPayPetitionResponseData.php
new file mode 100644
index 0000000..6b6b111
--- /dev/null
+++ b/src/Sbp/Data/Subscription/QrcSubPayPetitionResponseData.php
@@ -0,0 +1,27 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Apoloz\AlfaBank\Sbp\Data\Subscription;
+
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Data;
+
+class QrcSubPayPetitionResponseData extends Data
+{
+    public function __construct(
+        #[MapName('ErrorCode')]
+        public int $errorCode,
+        public string $message,
+        #[MapName('TermNo')]
+        public ?string $termNo = null,
+        public ?string $qrcId = null,
+        public ?string $status = null,
+        public ?string $payrrn = null,
+        public ?string $trxId = null,
+        public ?string $trxDT = null,
+        public ?int $amount = null,
+        public ?string $currency = null,
+        public ?string $payerId = null,
+    ) {}
+}
diff --git a/src/Sbp/Data/Subscription/RegQrSubRequestData.php b/src/Sbp/Data/Subscription/RegQrSubRequestData.php
index 511e3be..25b338b 100644
--- a/src/Sbp/Data/Subscription/RegQrSubRequestData.php
+++ b/src/Sbp/Data/Subscription/RegQrSubRequestData.php
@@ -13,6 +13,8 @@ namespace Apoloz\AlfaBank\Sbp\Data\Subscription;
 
 // <SECTION name="module_imports" intent="Import the base Spatie Laravel Data class.">
 // <BELIEF_STATE "Extending `Spatie\LaravelData\Data` enables automatic casting from arrays and provides DTO benefits.">
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Attributes\MapOutputName;
 use Spatie\LaravelData\Data;
 // </SECTION>
 
@@ -21,10 +23,12 @@ use Spatie\LaravelData\Data;
 class RegQrSubRequestData extends Data
 {
     // <SECTION name="constructor_properties" intent="Define the properties for the QR Code subscription registration request.">
-    // <BELIEF_STATE "The constructor includes mandatory `TermNo`, `subscriptionPurpose`, `notificationUrl`, and defaults `qrcType` to '03' (subscription). Optional fields like `qrTtl`, `redirectUrl`, `subscriptionServiceId`, and `subscriptionServiceName` provide flexibility for detailed subscription setup.">
+    // <BELIEF_STATE "The constructor includes mandatory `termNo`, `subscriptionPurpose`, `notificationUrl`, and defaults `qrcType` to '03' (subscription). Optional fields like `qrTtl`, `redirectUrl`, `subscriptionServiceId`, and `subscriptionServiceName` provide flexibility for detailed subscription setup.">
     public function __construct(
-        public string $TermNo,
+        #[MapName('TermNo')]
+        public string $termNo,
         public string $subscriptionPurpose,
+        #[MapOutputName('queryData.notificationUrl')]
         public string $notificationUrl,
         public string $qrcType = '03', // '03' = Subscription
         public ?string $qrTtl = null,
diff --git a/src/Sbp/Data/Subscription/RegQrSubResponseData.php b/src/Sbp/Data/Subscription/RegQrSubResponseData.php
new file mode 100644
index 0000000..1546a12
--- /dev/null
+++ b/src/Sbp/Data/Subscription/RegQrSubResponseData.php
@@ -0,0 +1,23 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Apoloz\AlfaBank\Sbp\Data\Subscription;
+
+use Spatie\LaravelData\Attributes\MapName;
+use Spatie\LaravelData\Data;
+
+class RegQrSubResponseData extends Data
+{
+    public function __construct(
+        #[MapName('ErrorCode')]
+        public int $errorCode,
+        #[MapName('TermNo')]
+        public string $termNo,
+        public string $message,
+        public ?string $image = null,
+        public ?string $payload = null,
+        public ?string $qrcId = null,
+        public ?string $status = null,
+    ) {}
+}
diff --git a/src/Sbp/Requests/DigitalRuble/GetUniQrStatusRequest.php b/src/Sbp/Requests/DigitalRuble/GetUniQrStatusRequest.php
index 469242e..5d6f4b0 100644
--- a/src/Sbp/Requests/DigitalRuble/GetUniQrStatusRequest.php
+++ b/src/Sbp/Requests/DigitalRuble/GetUniQrStatusRequest.php
@@ -59,11 +59,11 @@ class GetUniQrStatusRequest extends Request implements HasBody
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(\Saloon\Http\Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `GetUniQrStatusResponseData` DTO provides a type-safe and structured object for the status of Universal QR Codes.">
+    public function createDtoFromResponse(\Saloon\Http\Response $response): \Apoloz\AlfaBank\Sbp\Data\DigitalRuble\GetUniQrStatusResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\DigitalRuble\GetUniQrStatusResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/Requests/Management/BlockQrRequest.php b/src/Sbp/Requests/Management/BlockQrRequest.php
index 0c91c45..4b6543b 100644
--- a/src/Sbp/Requests/Management/BlockQrRequest.php
+++ b/src/Sbp/Requests/Management/BlockQrRequest.php
@@ -48,28 +48,21 @@ class BlockQrRequest extends Request implements HasBody
     // </SECTION>
 
     // <SECTION name="body_builder" intent="Construct the JSON body for the request.">
-    // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. The `TermNo` and `qrcId` identify the target, and `reason` provides context for the block.">
+    // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Using the DTO's `toArray` method ensures the payload is correctly structured.">
     protected function defaultBody(): array
     {
-        $body = [
-            'command' => 'BlockQRcId',
-            'TermNo' => $this->data->TermNo,
-            'qrcId' => $this->data->qrcId,
-        ];
-
-        if ($this->data->reason !== null) {
-            $body['reason'] = $this->data->reason;
-        }
-
-        return $body;
+        return array_merge(
+            ['command' => 'BlockQRcId'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(\Saloon\Http\Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `SbpManagementResponseData` DTO provides a structured object for the result of the block operation.">
+    public function createDtoFromResponse(\Saloon\Http\Response $response): \Apoloz\AlfaBank\Sbp\Data\Management\SbpManagementResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\Management\SbpManagementResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/Requests/Management/GetBlockedQrListRequest.php b/src/Sbp/Requests/Management/GetBlockedQrListRequest.php
index 58adb7b..a2a4a4f 100644
--- a/src/Sbp/Requests/Management/GetBlockedQrListRequest.php
+++ b/src/Sbp/Requests/Management/GetBlockedQrListRequest.php
@@ -57,11 +57,11 @@ class GetBlockedQrListRequest extends Request implements HasBody
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(\Saloon\Http\Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `GetBlockedQrListResponseData` DTO provides a type-safe object for the list of blocked QR Codes.">
+    public function createDtoFromResponse(\Saloon\Http\Response $response): \Apoloz\AlfaBank\Sbp\Data\Management\GetBlockedQrListResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\Management\GetBlockedQrListResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/Requests/Management/UnblockQrRequest.php b/src/Sbp/Requests/Management/UnblockQrRequest.php
index 88e5c4c..f54293e 100644
--- a/src/Sbp/Requests/Management/UnblockQrRequest.php
+++ b/src/Sbp/Requests/Management/UnblockQrRequest.php
@@ -48,22 +48,21 @@ class UnblockQrRequest extends Request implements HasBody
     // </SECTION>
 
     // <SECTION name="body_builder" intent="Construct the JSON body for the request.">
-    // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. The `TermNo` and `qrcId` identify the target QR Code.">
+    // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Using the DTO's `toArray` method ensures the payload is correctly structured.">
     protected function defaultBody(): array
     {
-        return [
-            'command' => 'UnblockQRcId',
-            'TermNo' => $this->data->TermNo,
-            'qrcId' => $this->data->qrcId,
-        ];
+        return array_merge(
+            ['command' => 'UnblockQRcId'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(\Saloon\Http\Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `SbpManagementResponseData` DTO provides a structured object for the result of the unblock operation.">
+    public function createDtoFromResponse(\Saloon\Http\Response $response): \Apoloz\AlfaBank\Sbp\Data\Management\SbpManagementResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\Management\SbpManagementResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/Requests/Reversal/GetQrcReversalDataRequest.php b/src/Sbp/Requests/Reversal/GetQrcReversalDataRequest.php
index da2010d..b1f666a 100644
--- a/src/Sbp/Requests/Reversal/GetQrcReversalDataRequest.php
+++ b/src/Sbp/Requests/Reversal/GetQrcReversalDataRequest.php
@@ -50,21 +50,10 @@ class GetQrcReversalDataRequest extends Request implements HasBody
     // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Other fields from the DTO are conditionally added, ensuring the payload precisely matches the API specification.">
     protected function defaultBody(): array
     {
-        $body = [
-            'command' => 'GetQRCreversalData',
-            'TermNo' => $this->data->TermNo,
-            'currency' => $this->data->currency,
-        ];
-
-        if ($this->data->qrcId !== null) $body['qrcId'] = $this->data->qrcId;
-        if ($this->data->payrrn !== null) $body['payrrn'] = $this->data->payrrn;
-        if ($this->data->trxId !== null) $body['trxId'] = $this->data->trxId;
-        if ($this->data->trxDT !== null) $body['trxDT'] = $this->data->trxDT;
-        if ($this->data->amount !== null) $body['amount'] = $this->data->amount;
-        if ($this->data->messageID !== null) $body['messageID'] = $this->data->messageID;
-        if ($this->data->ReturnRestAmount !== null) $body['ReturnRestAmount'] = $this->data->ReturnRestAmount;
-
-        return $body;
+        return array_merge(
+            ['command' => 'GetQRCreversalData'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
diff --git a/src/Sbp/Requests/Reversal/GetQrcReversalStatusRequest.php b/src/Sbp/Requests/Reversal/GetQrcReversalStatusRequest.php
index f775925..bcf2358 100644
--- a/src/Sbp/Requests/Reversal/GetQrcReversalStatusRequest.php
+++ b/src/Sbp/Requests/Reversal/GetQrcReversalStatusRequest.php
@@ -50,17 +50,10 @@ class GetQrcReversalStatusRequest extends Request implements HasBody
     // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Other fields from the DTO are conditionally added, ensuring the payload precisely matches the API specification.">
     protected function defaultBody(): array
     {
-        $body = [
-            'command' => 'GetQRCreversalStatus',
-            'TermNo' => $this->data->TermNo,
-        ];
-
-        if ($this->data->payrrn !== null) $body['payrrn'] = $this->data->payrrn;
-        if ($this->data->originalTrxId !== null) $body['originalTrxId'] = $this->data->originalTrxId;
-        if ($this->data->trxId !== null) $body['trxId'] = $this->data->trxId;
-        if ($this->data->messageID !== null) $body['messageID'] = $this->data->messageID;
-
-        return $body;
+        return array_merge(
+            ['command' => 'GetQRCreversalStatus'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
diff --git a/src/Sbp/Requests/Reversal/QrcReversalRequest.php b/src/Sbp/Requests/Reversal/QrcReversalRequest.php
index 1a8d190..f699719 100644
--- a/src/Sbp/Requests/Reversal/QrcReversalRequest.php
+++ b/src/Sbp/Requests/Reversal/QrcReversalRequest.php
@@ -50,22 +50,10 @@ class QrcReversalRequest extends Request implements HasBody
     // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Other fields from the DTO are conditionally added, ensuring the payload precisely matches the API specification.">
     protected function defaultBody(): array
     {
-        $body = [
-            'command' => 'QRCreversal',
-            'TermNo' => $this->data->TermNo,
-            'currency' => $this->data->currency,
-        ];
-
-        if ($this->data->qrcId !== null) $body['qrcId'] = $this->data->qrcId;
-        if ($this->data->payrrn !== null) $body['payrrn'] = $this->data->payrrn;
-        if ($this->data->trxId !== null) $body['trxId'] = $this->data->trxId;
-        if ($this->data->trxDT !== null) $body['trxDT'] = $this->data->trxDT;
-        if ($this->data->amount !== null) $body['amount'] = $this->data->amount;
-        if ($this->data->messageID !== null) $body['messageID'] = $this->data->messageID;
-        if ($this->data->notificationUrl !== null) $body['queryData'] = ['notificationUrl' => $this->data->notificationUrl];
-        if ($this->data->ReturnRestAmount !== null) $body['ReturnRestAmount'] = $this->data->ReturnRestAmount;
-
-        return $body;
+        return array_merge(
+            ['command' => 'QRCreversal'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
diff --git a/src/Sbp/Requests/Status/GetQrcStatusRequest.php b/src/Sbp/Requests/Status/GetQrcStatusRequest.php
index d52d1c9..df3b6f9 100644
--- a/src/Sbp/Requests/Status/GetQrcStatusRequest.php
+++ b/src/Sbp/Requests/Status/GetQrcStatusRequest.php
@@ -50,16 +50,10 @@ class GetQrcStatusRequest extends Request implements HasBody
     // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. The `TermNo` is mandatory, and `qrcId`, `payrrn`, and `messageID` are optional filters to pinpoint the transaction.">
     protected function defaultBody(): array
     {
-        $body = [
-            'command' => 'GetQRCstatus',
-            'TermNo' => $this->data->TermNo,
-        ];
-
-        if ($this->data->qrcId !== null) $body['qrcId'] = $this->data->qrcId;
-        if ($this->data->payrrn !== null) $body['payrrn'] = $this->data->payrrn;
-        if ($this->data->messageID !== null) $body['messageID'] = $this->data->messageID;
-
-        return $body;
+        return array_merge(
+            ['command' => 'GetQRCstatus'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
diff --git a/src/Sbp/Requests/Subscription/GetQrSubStatusRequest.php b/src/Sbp/Requests/Subscription/GetQrSubStatusRequest.php
index 78e4ae1..b162e39 100644
--- a/src/Sbp/Requests/Subscription/GetQrSubStatusRequest.php
+++ b/src/Sbp/Requests/Subscription/GetQrSubStatusRequest.php
@@ -66,11 +66,11 @@ class GetQrSubStatusRequest extends Request implements HasBody
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(\Saloon\Http\Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `GetQrSubStatusResponseData` DTO provides a structured object for the status of the subscription.">
+    public function createDtoFromResponse(\Saloon\Http\Response $response): \Apoloz\AlfaBank\Sbp\Data\Subscription\GetQrSubStatusResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\Subscription\GetQrSubStatusResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/Requests/Subscription/QrcSubPayPetitionRequest.php b/src/Sbp/Requests/Subscription/QrcSubPayPetitionRequest.php
index 64a1fda..f314cb2 100644
--- a/src/Sbp/Requests/Subscription/QrcSubPayPetitionRequest.php
+++ b/src/Sbp/Requests/Subscription/QrcSubPayPetitionRequest.php
@@ -61,11 +61,11 @@ class QrcSubPayPetitionRequest extends Request implements HasBody
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `QrcSubPayPetitionResponseData` DTO provides a structured object for the result of the payment petition.">
+    public function createDtoFromResponse(Response $response): \Apoloz\AlfaBank\Sbp\Data\Subscription\QrcSubPayPetitionResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\Subscription\QrcSubPayPetitionResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/Requests/Subscription/RegQrSubRequest.php b/src/Sbp/Requests/Subscription/RegQrSubRequest.php
index fea35c6..9f2cb7b 100644
--- a/src/Sbp/Requests/Subscription/RegQrSubRequest.php
+++ b/src/Sbp/Requests/Subscription/RegQrSubRequest.php
@@ -46,33 +46,21 @@ class RegQrSubRequest extends Request implements HasBody
     // </SECTION>
 
     // <SECTION name="body_builder" intent="Construct the JSON body for the request.">
-    // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Fields from the DTO are mapped, including conditional and nested `queryData` for notification URLs.">
+    // <BELIEF_STATE "The `command` field specifies the operation to the SBP API. Using the DTO's `toArray` method ensures the payload is correctly structured.">
     protected function defaultBody(): array
     {
-        $body = [
-            'command' => 'RegQRcSub',
-            'TermNo' => $this->data->TermNo,
-            'qrcType' => $this->data->qrcType,
-            'subscriptionPurpose' => $this->data->subscriptionPurpose,
-            'queryData' => [
-                'notificationUrl' => $this->data->notificationUrl,
-            ],
-        ];
-
-        if ($this->data->qrTtl !== null) $body['qrTtl'] = $this->data->qrTtl;
-        if ($this->data->redirectUrl !== null) $body['redirectUrl'] = $this->data->redirectUrl;
-        if ($this->data->subscriptionServiceId !== null) $body['subscriptionServiceId'] = $this->data->subscriptionServiceId;
-        if ($this->data->subscriptionServiceName !== null) $body['subscriptionServiceName'] = $this->data->subscriptionServiceName;
-
-        return $body;
+        return array_merge(
+            ['command' => 'RegQRcSub'],
+            $this->data->toArray()
+        );
     }
     // </SECTION>
 
-    // <SECTION name="response_caster" intent="Return the raw JSON response as an array.">
-    // <BELIEF_STATE "For this specific request, the response is currently returned as a raw array. A dedicated DTO could be created if a structured object is required.">
-    public function createDtoFromResponse(Response $response): array
+    // <SECTION name="response_caster" intent="Map the JSON response to a DTO.">
+    // <BELIEF_STATE "Casting the response to a `RegQrSubResponseData` DTO provides a structured object for the result of the subscription registration.">
+    public function createDtoFromResponse(Response $response): \Apoloz\AlfaBank\Sbp\Data\Subscription\RegQrSubResponseData
     {
-        return $response->json();
+        return \Apoloz\AlfaBank\Sbp\Data\Subscription\RegQrSubResponseData::from($response->json());
     }
     // </SECTION>
 }
diff --git a/src/Sbp/SbpConnector.php b/src/Sbp/SbpConnector.php
index 0b21776..c485d1a 100644
--- a/src/Sbp/SbpConnector.php
+++ b/src/Sbp/SbpConnector.php
@@ -54,7 +54,15 @@ class SbpConnector extends Connector implements HasPagination
         return \Apoloz\AlfaBank\Sbp\Data\Webhooks\SbpRefundNotificationData::from($data);
     }
 
-    protected function defaultHeaders(): array
+    /**
+     * Parse digital ruble payment notification from request body.
+     */
+    public function parseDigitalRubleNotification(array $data): \Apoloz\AlfaBank\Sbp\Data\DigitalRuble\Notifications\PaymentDrNotificationData
+    {
+        return \Apoloz\AlfaBank\Sbp\Data\DigitalRuble\Notifications\PaymentDrNotificationData::from($data);
+    }
+
+    protected function defaultConfig(): array
     {
         $config = [
             'cert' => $this->alfaConfig->certificatePath,
@@ -69,6 +77,13 @@ class SbpConnector extends Connector implements HasPagination
         return $config;
     }
 
+    protected function defaultHeaders(): array
+    {
+        return [
+            'Accept' => 'application/json',
+        ];
+    }
+
     protected function defaultMiddleware(): array
     {
         return [
diff --git a/tests/Feature/Sbp/ConfigTest.php b/tests/Feature/Sbp/ConfigTest.php
index 50c8d72..0363530 100644
--- a/tests/Feature/Sbp/ConfigTest.php
+++ b/tests/Feature/Sbp/ConfigTest.php
@@ -23,7 +23,7 @@ test('sbp connector uses injected config', function () {
     expect($connector->resolveBaseUrl())->toBe('https://test.alfa');
 
     $response = $connector->send(new GetQrCodeRequest(
-        new QrCodeRequestData('term', '01', '100', 'purpose')
+        new QrCodeRequestData(termNo: 'term', qrcType: '01', amount: '100', paymentPurpose: 'purpose')
     ));
 
     expect($response->status())->toBe(200);
diff --git a/tests/Feature/Sbp/ReversalTest.php b/tests/Feature/Sbp/ReversalTest.php
index de14c7a..449161f 100644
--- a/tests/Feature/Sbp/ReversalTest.php
+++ b/tests/Feature/Sbp/ReversalTest.php
@@ -26,7 +26,7 @@ test('can check reversal data', function () {
     $connector->withMockClient($mockClient);
 
     $payload = new GetQrcReversalDataRequestData(
-        TermNo: 'term-1',
+        termNo: 'term-1',
         qrcId: 'test-id'
     );