public async Task <JsonResult> AddBet(string bet)
        {
            BetDto betDto = JsonConvert.DeserializeObject <BetDto>(bet);

            try
            {
                var currentBet = await _auctionService.AddBet(betDto);

                await _hubContext.Clients.All.SendAsync("Notify", $"Добавлена новая ставка: {betDto.CurrentBet} - {DateTime.Now.ToShortTimeString()}");

                return(Json(new { success = true, result = currentBet }));
            }
            catch (Exception ex)
            {
                return(Json(new { success = false, result = ex.Message }));
            }
        }