WebhookMessageEnvelope

{
    "event": "message",
    "data": "{\"chat_user_id\":12345,\"sequence_id\":\"78543891234567890\",\"msg_type\":\"video\",\"msg\":\"https://cdn.example.com/webhook/video.mp4\",\"send_time\":1787568000,\"quote_chat\":[],\"chat_session_id\":98765,\"channel_uid\":\"1122334455\",\"sys_user_id\":10001,\"channel\":1,\"sender_type\":1,\"sender\":10001,\"channel_id\":1122,\"channel_name\":\"Messenger Page\",\"mid\":\"m_001\",\"chat_session_encrypt_id\":\"ENC_SESSION_ID\",\"chat_user\":{\"id\":12345,\"name\":\"Customer\"}}"
}