public string Dispatch(Request data)
    {
        var uri = ...
        WebResponse _result = null;

        using (var ws = new WebSocket(uri))
        {
            ws.OnMessage += (sender, e) =>
            {
                var response = e.Data;
            };

            ws.Send(request);
            while (_result == null)
            {
                Thread.Sleep(10);
            }

            return _result;
        }
    }