How to get GUID value of territoryID of systemUserSet by using Json and odata

Hi,

I want to get GUID of territory ID of systemUserSet by using Json and odata.  Please find below script used for getting this but I am getting Firstname correctly as first name of user and objectid as shown below image against result of alerts in the scripts

clientid = Xrm.Page.context.getUserId();
var context = Xrm.Page.context;
serverUrl = context.getServerUrl(); 
var ODataPath = serverUrl + "/XRMServices/2011/OrganizationData.svc";
var retrieveResult = new XMLHttpRequest();
retrieveResult.open("GET", ODataPath + "/SystemUserSet?$select=FirstName,TerritoryId&$filter=SystemUserId eq guid'" + clientid + "'", false);
retrieveResult.setRequestHeader("Accept", "application/json");
retrieveResult.setRequestHeader("Content-Type", "application/json; charset=utf-8");
retrieveResult.send();
if (retrieveResult.readyState == 4 )
   {
   if (retrieveResult.status == 200)
          {
            var retrieved = JSON.parse(retrieveResult.responseText).d;

       var  terid = retrieved.results[0].TerritoryId;
       var  fname = retrieved.results[0].FirstName;

            alert(fname);
            alert(terid);
  
           }
   }

fname     GP

tried

but I need to get not object the GUID value  as shown below screen.  How I can get this.  Kindly help me.