{
  "manageEntity": {
    "action": "Save",
    "entityId": "4281",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0xbda838904db6bd907e2d8152797c9e8b84ea8722fd28f369f3936914418a3261",
    "signature": "0x6f211f696af700e689250f29db30bf236ec02c70569f0b6f861b5ce50dfa402c16b6eb7454e5725da224325f36cd5269c2b3d8841341b27a3b2b68e624be6aaf1b",
    "signer": "0x8cEe7cae7F763BBa20970ab957A031A01df10A17",
    "userId": "6272954"
  }
}