jQuery Grid Plugin - jqGrid

{"rows":[{"id":"1","authority":"ROLE_ADMINISTRATOR","creationDate":"2005-07-23 02:16:57.0","lastName":
 "Adminich","login":"root","firstName":"CardAdmin","password":"63a9f0ea7bb98050796b649e85481845"}]}

It`s my table:

jQuery("#usersGrid").jqGrid({
        url: "getUsersList.do",
        mtype: "GET",
        datatype: "json",
        height: 500,
        width: (document.getElementById('info').offsetWidth – 40),
        colNames:['Id','Creation date', 'Login', 'First name','Last name','Role'],
        colModel:[
            {name:'id',index:'id', width:60, sorttype:"int"},
            {name:'creation_date',index:'creation_date', width:120, sorttype:"date"},
            {name:'login',index:'login', width:150},
            {name:'firstName',index:'firstName', width:80, align:"right",sorttype:"float"},
            {name:'lastName',index:'lastName', width:80, align:"right",sorttype:"float"},
            {name:'authority',index:'authority', width:100,align:"right",sorttype:"float"}
        ],
        multiselect: true,

        hidegrid: false,
        toolbar: [true,"top"],
        pager: jQuery('#pager'),
        rowNum:10,
        rowList:[5,10,15],
        sortname: 'id',
        onCellSelect: function(id) {
            var selected = jQuery("#usersGrid").getRowData(id);
            alert(selected['name']);
        },
        viewrecords: true
    });
Please help me!