void Application_BeginRequest(object sender, EventArgs e)
    {
        if (ReferenceEquals(null, HttpContext.Current.Request.Headers["Authorization"]))
        {
            var token = HttpContext.Current.Request.Params["Authorization"];
            if (!String.IsNullOrEmpty(token))
            {
                HttpContext.Current.Request.Headers.Add("Authorization", "Bearer " + token);
            }
        }
    }