{
  "objectType": "activity",
  "verb": "post",
  "id": "tag:example.com,2001:3344",
  "content": "Bookmark: <a class=\"u-bookmark-of\" href=\"http://example.com/post\">example.com/post</a>",
  "object": {
    "objectType": "bookmark",
    "targetUrl": "http://example.com/post"
  }
}
