Creating an array from json String variable

"[\"1454\",\"1455\",\"1456\",\"1457\",\"1458\",\"1459\"]"

I am getting a json string in my string variable in a action method that I am sending as json.stringify. These Are the id's of selected rows from jqgrid..

I just want to create an array of the Id's I am getting . I do not want the others like backslash or forward or double qutes.

Can you pl.Help me . How is this possible in C#

Controller::
 public ActionResult ExportSelectedData(string SelectedRows)
        {
}

View Code::
function genGraph() {
        // location.href = "/WebReports/BatchReport";
        var selRowIds = $("#list1").jqGrid('getGridParam', 'selarrrow');
        var Array = JSON.stringify(selRowIds);

        $.ajax({
            type: 'POST',
            url: '/WebReports/ExportSelectedData',
            data: "{'SelectedRows':'" + Array + "'}",
            contentType: 'application/json; charset=utf-8',
            dataType: 'json',
            success: function (returnValue) {
                location.href = "/WebReports/Download?file=" + returnValue.File;
            }
        });
        alert(Array);