public void AddMember(MessageHeaderAddMemberDTO addMember)
        {
            var header = _dataBase.MessageHeaders.GetById(addMember.MessageHeaderId);

            header.Users.Add(_dataBase.Profiles.GetById(addMember.UserId));
            _dataBase.MessageHeaders.Update(header);
            _dataBase.Save();
        }
        public IHttpActionResult AddMember([FromBody] AddMemberModel add)
        {
            var addMember = new MessageHeaderAddMemberDTO
            {
                MessageHeaderId = add.MessageHeaderId,
                UserId          = add.UserId
            };

            _messageHeaderService.AddMember(addMember);
            return(Ok());
        }