SubscribeResponseDto

{
    "start_url": "https://t.me/bot?start=token",
    "vk_group_id": 158819144,
    "already_subscribed": false,
    "account": {
        "name": "Максим Лаптев",
        "avatar_url": "string",
        "profile_url": "string",
        "external_user_id": "67890"
    }
}