public async Task Handle(ChatMessageSentEvent notification, CancellationToken cancellationToken)
        {
            var message = new ChatMessageEntity()
            {
                Stock = notification.Stock, FromNickName = notification.Nickname, Message = notification.Message, SentTime = dateTime.Now
            };
            await unitOfWork.AddAndSaveAsync(message);

            await notifier.NotifyMessageSet(message);
        }