(Facebook API) How to update data in object_story_spec?

Question

Facebook

Unable to update information in object_story_spec I update
like this

$creative = new AdCreative($obj['id']);
$creative->setData([
       AdCreativeFields::OBJECT_STORY_SPEC => [
             AdCreativeObjectStorySpecFields::LINK_DATA => [
                     AdCreativeLinkDataFields::LINK => $newUrl
             ]
       ]
]);
$creative->save();

In the end it didn't change.