Event Type: favorite

favorite[* Object Favorite]: Favorite Information
- favorite_id[* String]: Favorite-Object ID
- favorite_type[String]: Favorite-Object Type, enumeration
  - merchandise
  - feed
  - article
  - comment
  - other
- author_account_id[String]: Author Account ID of Favorite-Object, Empty when Like-Object is not created by users. Example: merchandise

{
    "favorite": {
        "favorite_id": "NHDKDOMO837",
        "favorite_type": "feed",
        "author_account_id": "123456"
    }
}