{
  "manageEntity": {
    "action": "Save",
    "entityId": "636467497",
    "entityType": "Playlist",
    "metadata": "{\"is_save_of_repost\":false}",
    "nonce": "0x798f65a5aef0720110f68fb306604d65cfbd08f6a5829c3ff3cc6797f48a020e",
    "signature": "0xc9a515a31efbf0b107f0aaebc61a592ae9e0d4a102f86bf4311a17fd4c4b4d272da829dfe9df821f5202272427aabcaf3dcf4bc26464975f6032866c802197fb1c",
    "signer": "0xbF4F1f4df4779768AfE75515b1552a2Bc5b4Dd32",
    "userId": "100976759"
  }
}