public ApiResponse SendMessageUser([FromBody] MessageRequest request)
        {
            try
            {
                var response = _notifierService.SendMessageToUser(request.Username, request.Message).GetAwaiter().GetResult();
                if (response)
                {
                    return(ApiResponses.Success(null));
                }

                return(null);
            }
            catch (Exception ex)
            {
                return(ApiResponses.InternalError(null, ex.Message));
            }
        }