public async Task SendMessage([FromBody] MessageData data)
{
var userName = User.Identity.Name;
var userId = int.Parse(User.Claims.First(claim => claim.Type == "id").Value);
var user = new User(userId, userName);
var message = new Message(user, data.Text);
chatData.Add(message);
await _hubContext.Clients.All.SendAsync("ReceiveMessage", message);
}