{
  "manageEntity": {
    "action": "Save",
    "entityId": "1928074664",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x57c7759cd8f5a6cbf4d27bb42a587c3fc45ac4adeb00552968a8046f4980b24b",
    "signature": "0xe866361e7f16f7d7f07f552cd38f5c49f2b62a4e7bdf46236d8b6f9cc235d94f6885a4d2ca18d2806fa2c6aa2b2c10bed551785bd713b58f2b71d1b5915173251c",
    "signer": "0x73317E9D44b6E1b7d146760b12dc5546Cd140ED2",
    "userId": "683609933"
  }
}