anchor.diff:                      "https://catalog.elog.io/groups/someGroupID"
                       ],
                   "annotations": [{
  -                        "id", "63613d7321ee5396e592d7d1",
  +                        "id": "63613d7321ee5396e592d7d1",
                           "updated_by": "https://catalog.elog.io/users/anotherUserID",
                           "updated_at": "2014-04-14T02:15:15Z",
                           "score": 100,
  
positive.code:     + Body
  
              {
                  "id", "63613d7321ee5396e592d7d1",
                  "updated_by": "https://catalog.elog.io/users/anotherUserID",
                  "updated_at": "2014-04-14T02:15:15Z",
                  "score": 100,
  
negative.code:                 "added_at": "2014-04-14T02:15:15Z",
                  "replaces": "https://catalog.elog.io/media/prevMediaID",
                  "annotations": [{
                          "id": "63613d7321ee5396e592d7d1",
                          "updated_by": "https://catalog.elog.io/users/anotherUserID",
                          "updated_at": "2014-04-14T02:15:15Z",
                          "score": 100,
  