getting Error during serialization or deserialization using the JSON JavaScriptSerializer

Question

how to deserialize data getting error -

"Error during serialization or deserialization using the JSON JavaScriptSerializer. The length of the string exceeds the value set on the maxJsonLength property."

 var data = Newtonsoft.Json.JsonConvert.SerializeObject(db.RawDatas);
        return Json(data, JsonRequestBehavior.AllowGet);