Получаем последнюю заявку по <see cref="P:Dto.Common.Models.User.Id">User.Id</see>

{
    "result": {
        "id": 0,
        "state": "Created",
        "rejection_reason": "string",
        "created_at": "2019-08-24T14:15:22.123Z",
        "modified_at": "2019-08-24T14:15:22.123Z",
        "user_admin_id": 0,
        "user_mobile_id": 0
    },
    "message": "string",
    "status": "string",
    "error_code": "string",
    "traceId": "string",
    "http_status": 0
}