{
  "manageEntity": {
    "action": "Save",
    "entityId": "69410",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xffcf4cc6ba0fb4f78606d30d58013f19b9651f19de07b6a790fbd06c90783b4d",
    "signature": "0x09ef4056c2e28713c673f32f3270dcfceb3777ef29d701ce3f4bad5942b5c8f405565b5cf8acbb1144606655516477e527ad1ff5bc59dcb4875297766920a7811c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}