diff --git a/src/Models/Message.php b/src/Models/Message.php
index 28eac3e..54a8a5c 100644
--- a/src/Models/Message.php
+++ b/src/Models/Message.php
@@ -11,8 +11,8 @@ final readonly class Message extends AbstractModel
 {
     /**
      * @param int $timestamp Unix-time when message was created.
-     * @param MessageBody $body Body of created message. Text + attachments.
      * @param Recipient $recipient Message recipient. Could be user or chat.
+     * @param MessageBody|null $body Body of created message. Text + attachments.
      * @param User|null $sender User who sent this message. Can be null if message has been posted on behalf of a channel.
      * @param string|null $url Message public URL. Can be null for dialogs or non-public chats/channels.
      * @param LinkedMessage|null $link Forwarded or replied message.
@@ -20,8 +20,8 @@ final readonly class Message extends AbstractModel
      */
     public function __construct(
         public int $timestamp,
-        public MessageBody $body,
         public Recipient $recipient,
+        public ?MessageBody $body,
         public ?User $sender,
         public ?string $url,
         public ?LinkedMessage $link,
diff --git a/tests/Models/Attachments/Payloads/PhotoAttachmentRequestPayloadTest.php b/tests/Models/Attachments/Payloads/PhotoAttachmentRequestPayloadTest.php
new file mode 100644
index 0000000..fcb802b
--- /dev/null
+++ b/tests/Models/Attachments/Payloads/PhotoAttachmentRequestPayloadTest.php
@@ -0,0 +1,108 @@
+<?php
+
+declare(strict_types=1);
+
+namespace BushlanovDev\MaxMessengerBot\Tests\Models\Attachments\Payloads;
+
+use BushlanovDev\MaxMessengerBot\Attributes\ArrayOf;
+use BushlanovDev\MaxMessengerBot\Models\Attachments\Payloads\PhotoAttachmentRequestPayload;
+use BushlanovDev\MaxMessengerBot\Models\Attachments\Payloads\PhotoToken;
+use InvalidArgumentException;
+use PHPUnit\Framework\Attributes\CoversClass;
+use PHPUnit\Framework\Attributes\DataProvider;
+use PHPUnit\Framework\Attributes\Test;
+use PHPUnit\Framework\Attributes\UsesClass;
+use PHPUnit\Framework\TestCase;
+
+#[CoversClass(PhotoAttachmentRequestPayload::class)]
+#[UsesClass(PhotoToken::class)]
+#[UsesClass(ArrayOf::class)]
+final class PhotoAttachmentRequestPayloadTest extends TestCase
+{
+    #[Test]
+    public function canBeCreatedWithUrlOnly(): void
+    {
+        $payload = new PhotoAttachmentRequestPayload(url: 'https://example.com/photo.jpg');
+
+        $this->assertSame('https://example.com/photo.jpg', $payload->url);
+        $this->assertNull($payload->token);
+        $this->assertNull($payload->photos);
+
+        $expectedArray = [
+            'url' => 'https://example.com/photo.jpg',
+            'token' => null,
+            'photos' => null,
+        ];
+        $this->assertEquals($expectedArray, $payload->toArray());
+    }
+
+    #[Test]
+    public function canBeCreatedWithTokenOnly(): void
+    {
+        $payload = new PhotoAttachmentRequestPayload(token: 'uploaded_token_abc');
+
+        $this->assertSame('uploaded_token_abc', $payload->token);
+        $this->assertNull($payload->url);
+        $this->assertNull($payload->photos);
+
+        $expectedArray = [
+            'token' => 'uploaded_token_abc',
+            'url' => null,
+            'photos' => null,
+        ];
+        $this->assertEquals($expectedArray, $payload->toArray());
+    }
+
+    #[Test]
+    public function canBeCreatedWithPhotosOnly(): void
+    {
+        $photos = [
+            new PhotoToken('token_1'),
+            new PhotoToken('token_2'),
+        ];
+        $payload = new PhotoAttachmentRequestPayload(photos: $photos);
+
+        $this->assertSame($photos, $payload->photos);
+        $this->assertNull($payload->url);
+        $this->assertNull($payload->token);
+
+        $expectedArray = [
+            'photos' => [
+                ['token' => 'token_1'],
+                ['token' => 'token_2'],
+            ],
+            'url' => null,
+            'token' => null,
+        ];
+        $this->assertEquals($expectedArray, $payload->toArray());
+    }
+
+    /**
+     * Data provider for invalid constructor arguments.
+     *
+     * @return array<string, array{0: string|null, 1: string|null, 2: array|null}>
+     */
+    public static function invalidPayloadProvider(): array
+    {
+        return [
+            'all null (no arguments)' => [null, null, null],
+            'url and token provided' => ['https://a.com', 'token123', null],
+            'url and photos provided' => ['https://a.com', null, [new PhotoToken('t')]],
+            'token and photos provided' => [null, 'token123', [new PhotoToken('t')]],
+            'all three arguments provided' => ['https://a.com', 'token123', [new PhotoToken('t')]],
+        ];
+    }
+
+    #[Test]
+    #[DataProvider('invalidPayloadProvider')]
+    public function constructorThrowsExceptionForInvalidArguments(
+        ?string $url,
+        ?string $token,
+        ?array $photos
+    ): void {
+        $this->expectException(InvalidArgumentException::class);
+        $this->expectExceptionMessage('Provide exactly one of "url", "token", or "photos" for PhotoAttachmentRequestPayload.');
+
+        new PhotoAttachmentRequestPayload($url, $token, $photos);
+    }
+}
diff --git a/tests/Models/MessageTest.php b/tests/Models/MessageTest.php
index 2c60154..2227e96 100644
--- a/tests/Models/MessageTest.php
+++ b/tests/Models/MessageTest.php
@@ -28,6 +28,11 @@ final class MessageTest extends TestCase
     {
         $data = [
             'timestamp' => time(),
+            'recipient' => [
+                'chat_type' => 'dialog',
+                'user_id' => 123,
+                'chat_id' => null,
+            ],
             'body' => [
                 'mid' => 'mid.456.xyz',
                 'seq' => 101,
@@ -35,11 +40,6 @@ final class MessageTest extends TestCase
                 'attachments' => null,
                 'markup' => null,
             ],
-            'recipient' => [
-                'chat_type' => 'dialog',
-                'user_id' => 123,
-                'chat_id' => null,
-            ],
             'sender' =>[
                 'user_id' => 123,
                 'first_name' => 'John',
diff --git a/tests/WebhookHandlerTest.php b/tests/WebhookHandlerTest.php
index cc601ee..01ec307 100644
--- a/tests/WebhookHandlerTest.php
+++ b/tests/WebhookHandlerTest.php
@@ -79,8 +79,8 @@ final class WebhookHandlerTest extends TestCase
         );
         $message = new Message(
             $data['message']['timestamp'],
-            $messageBody,
             $recipient,
+            $messageBody,
             null,
             null,
             null,