Facebook API webhook - 获取有关共享帖子的信息

Question

我正在使用Facebook API webhook 。目前，我可以进行API调用并获取与帖子上的喜欢和评论相关的所有数据。

例如，当有人评论帖子时，我收到了，感谢Facebook API webhook这些信息：

(
[entry] => Array
    (
        [0] => stdClass Object
            (
                [changes] => Array
                    (
                        [0] => stdClass Object
                            (
                                [field] => feed
                                [value] => stdClass Object
                                    (
                                        [parent_id] => ...
                                        [sender_name] => ...
                                        [comment_id] => ...
                                        [sender_id] => ..
                                        [item] => comment
                                        [verb] => add
                                        [created_time] => 1467111568
                                        [post_id] => ..
                                        [message] => comment
                                    )

                            )

                    )

                [id] => ...
                [time] => 1467111568
            )
     )
  )

当有人喜欢或发布帖子时也是如此！ 但当有人分享帖子时，我没有从FACEBOOK API webhook收到任何内容！当有人与Facebook API webhook共享帖子时，有人可以帮助我接收更新。

感谢