public IHttpActionResult AddMessage(MesageSubmitModel model)
        {
            if (!ModelState.IsValid)
            {
                return(BadRequest(ModelState));
            }

            var id = _bllService.AddMessage(new MessageModel {
                TextMessage = model.Message.Trim(), UserName = model.UserName.Trim()
            });

            return(Ok(id));
        }