Sending multi-selected rows to server from jqGrid

Question

How can I send multiple row first column values to server in jqGrid?

Update 1: my approach

jQuery("#wics").click( function(){

    var ids =jQuery("#list10").jqGrid('getGridParam','selarrrow');

    $.ajax({
      type: "POST",
      url: "/cpsb/unprocessedOrders.do?method=releaseTowics&orderNum="+ids,
      data: JSON.stringify(ids), 
      dataType: "json",
      success: function(msg){
          alert(msg);
      }

    });

    });

Edit: this approach is working .