Parse JSON from System.Web.HttpContext.Current.Request.InputStream using streamreader and ReadToEndAsync()

I've set up an Actionresult in an MVC controller that will be invoked when a URL is visited (routeconfig) and allow a request to be made from a dialogflow JSON request, and the JSON from this will then be parsed and actioned on our end of things / return appropriate JSON. When i try doing this using streamreader ReadToEndAsync, this doesn't work and JObject.Parse fails/errors.

I've tried different ways of trying to parse the JSON, with continuewith etc, but these don't seem to work as expected.

Controller ActionResult

public ActionResult JSONQuery()
{

            System.IO.StreamReader reader = new System.IO.StreamReader(System.Web.HttpContext.Current.Request.InputStream);
            reader.BaseStream.Position = 0;
            var requestFromPost = reader.ReadToEndAsync();

            var intentRequestJSON = JObject.Parse(requestFromPost.Result);


            //JToken Name = intentRequestJSON.SelectToken("test.name");

            return new ContentResult { Content = requestFromPost.Result, ContentType = "application/json" };
        }

Test AJAX query to enable me to debug using breakpoint in Visual Studio

$.ajax({
            url: 'http://localhost/test/',
            type: 'POST',
            data: {
                json: JSON.stringify({
                    test: "Testing"
                })
            },
            dataType: 'json',
            success: function (data) {
                alert(data);
            },
            error: function (data) {
                alert("Nope");
            }
        });

What i'd expect is for the JSON to be parsed correctly, so i can do logic on the key/value pairs. What i'm currently getting is:

Newtonsoft.Json.JsonReaderException HResult=0x80131500 Message=Unexpected character encountered while parsing value: j. Path '', line 0, position 0. Source=Newtonsoft.Json StackTrace: at Newtonsoft.Json.JsonTextReader.ParseValue() at Newtonsoft.Json.JsonTextReader.Read() at Newtonsoft.Json.Linq.JObject.Load(JsonReader reader) at Newtonsoft.Json.Linq.JObject.Parse(String json) at TestController.<>c.<DiagflowDivertQuery>b__37_0(Task`1 t) in C:\inetpub\wwwroot\test\Web\Controllers\TestController.cs:line 2988 at System.Threading.Tasks.Task.Execute()

After a bit of reading, the way i found that works (and is simpler) is:

public ActionResult JSONQuery() {

        System.IO.StreamReader reader = new System.IO.StreamReader(System.Web.HttpContext.Current.Request.InputStream);
        reader.BaseStream.Position = 0;
        var requestFromPost = reader.ReadToEndAsync();

        dynamic json = JsonConvert.DeserializeObject(requestFromPost.Result);
        string intent = json.queryResult.intent.name;

        return new ContentResult { Content = requestFromPost.Result, ContentType = "application/json" };
    }

Hope this helps someone.