How to get arraylist from formData in action mvc

Question

I have Used formData for getting values from Views. I have used one ArrayList in this ArrayList multiple parameters are used this ArrayList append in FormData object.

var resultQuiz = [];
                     var fileData = new FormData();
           $.each($('#imgInp')[0].files, function (i, file) {
               fileData.append('file-' + i, file);
           });
           $("input[name=chkbox]:checked").each(function (i) {

               var test = "textOther_" + $(this).attr('id');
               resultQuiz.push({
                   Id: Id,
                   Message: 'checkbox',
                   selectedAnswerOptionID: $(this).attr('id'),
                   isotherField: $("#" + test + "").val(),

               })
           });
           fileData.append('resultQuiz', resultQuiz);
$.ajax({
               url: '@Url.Action("QuizTest", "Quizz")',
               data: fileData,
               processData: false,
               contentType: false,
               type: 'POST',
               success: function (data) {
                   if (data == "Tagged") {

                   }
               }
           });

 how to access this arraylist in action.