{"type":"change-merged",
 "change":{"project":"project-name",
           "branch":"branch-name",
           "topic":"topic-name",
           "id":"Ideadbeefdeadbeefdeadbeefdeadbeefdeadbeef",
           "number":"123456",
           "subject":"Commit message subject",
           "owner":{"name":"Owner Name",
                    "email":"owner@example.com"},
           "url":"http://review.example.com/123456"},
 "patchSet":{"number":"4",
             "revision":"deadbeefdeadbeefdeadbeefdeadbeefdeadbeef",
             "ref":"refs/changes/56/123456/4",
             "uploader":{"name":"Uploader Name",
                         "email":"uploader@example.com"},
             "createdOn":1341370514},
 "submitter":{"name":"Submitter Name",
              "email":"submitter@example.com"}}