Passing too many parameters in c# mehod using ajax post call

$(document).ready(function () {
            var Student = {};
            Student.Name = "Srikanth";
            Student.group = "IT";
            var DTO = {'Student' : Student};
            ObjectPost(DTO);

        })
        function ObjectPost(DTO) {
            $.ajax({
                type: "POST",
                url: "CustomerForm.aspx/getobjects",
                data:  JSON.stringify(DTO),
                contentType: "application/json; charset=utf-8",
                success: function (result) {
                    alert(result.d);
                },
                error: function (err) {
                    alert(err.status + " - " + err.statusText);
                }
            });
        }