CaseServices.getCases().then(function (response) {
            $scope.gridOptions.columnDefs = [
          { name:'Title', field: 'Title' },
          { name:'Case Manager', field: 'Case_x0020_Manager.Title' },
          { name:'Client', field: 'Client.FirstName' + 'Client.Title'},

        ],
            $scope.gridOptions.data = response.d.results;
        });

columnDefs: [
          { name:'firstName', field: 'first-name' },
          { name:'1stFriend', field: 'friends[0]' },
          { name:'city', field: 'address.city'},
          { name:'getZip', field: 'getZip()', enableCellEdit:false}
        ],
        data : [      {
                           "first-name": "Cox",
                           "friends": ["friend0"],
                           "address": {street:"301 Dove Ave", city:"Laurel", zip:"39565"},
                           "getZip" : function() {return this.address.zip;}
                       }
                   ]