FineUploader data

Hi Community. I apologize in advance if this is a repeat question, but I've been searching around and haven't been able to find any answers.

I'm trying to get write Controller (in asp.net core) code to handle my fineuploader requests but it keeps failing to see the request data. Here is my uploader config in the view page:

var uploader = new qq.FineUploader({
            element: document.getElementById("uploader"),
            request: {
                endpoint: '@Url.Action("AddAttachment", "Util")',
                customHeaders: {"RequestVerificationToken": '@GetAntiXsrfRequestToken()',"Content-Type": 'application/json'
                }
            },

public JsonResult AddAttachment([FromForm] Object o){
         //var x = HttpContext.Request;
         //return Json(x);
         if(o == null){
             return Json("no data");
         }else{
             return Json(o);
         }
    }

------WebKitFormBoundarySQwYoYovQOkoFU1f
Content-Disposition: form-data; name="test"

876
------WebKitFormBoundarySQwYoYovQOkoFU1f
Content-Disposition: form-data; name="qquuid"

9ba04b80-b3d8-4e2d-8068-792dd77253bd
------WebKitFormBoundarySQwYoYovQOkoFU1f
Content-Disposition: form-data; name="qqfilename"

dohPlayDat.PNG
------WebKitFormBoundarySQwYoYovQOkoFU1f
Content-Disposition: form-data; name="qqtotalfilesize"

3535659
------WebKitFormBoundarySQwYoYovQOkoFU1f
Content-Disposition: form-data; name="qqfile"; filename="dohPlayDat.PNG"
Content-Type: image/png


------WebKitFormBoundarySQwYoYovQOkoFU1f-