{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x779082cf7ea7dee8fc63ea5991571f443f7538b2827c0460717ef5aac2a2c822",
    "signature": "0xa71aa27186e2da5cce89d7f8705a733a37f47f18c24ba85a702ce7377880c356220a9cba32db55cb3e05e9d746b9313ce7ffee449185ec102f82709cf510aa8c1c",
    "signer": "0x278Bf03AB04ADf687A7F14686b920Ea1e91427C1",
    "userId": "384732135"
  }
}