object = { "var1" : {
                   "var2a" : {
                          "someKey" : someValue
                           }
                   "var2b" : {
                          "someKey" : someOtherValue
                            }}}

<div ng-repeat = "child in object">
     <div ng-repeat = "grandChild in child ">
          <td> {{grandChild.aKey}}</td>
     </div>
</div>