public void ChangeModerator([FromBody] User user, bool isModerator)
 {
     ChatContext.ChangeModerator(user, isModerator);
 }
 public void BanUserToChat([FromBody] User user, double time)
 {
     ChatContext.BanUser(user, time);
 }
 public void RenameUser([FromBody] User user, string newUserName)
 {
     ChatContext.RenameUser(user, newUserName);
 }