{
  "manageEntity": {
    "action": "Update",
    "entityId": "16093147",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"playlist_contents\":[{\"timestamp\":1787784700,\"track_id\":1430524610},{\"timestamp\":1787784700,\"track_id\":42081},{\"timestamp\":1787784700,\"track_id\":541223}]}}",
    "nonce": "1787784700429120605",
    "signature": "0x457ef56fef4f2c238dd26d655ea6ec99e662a54883590edba8be276354c819e25a9e08f1dd97fdfb9521c25967650cbac57d93a2c51f05cdbb7d6d49f41b8ec71b",
    "signer": "0x922cb2AE695da9f7Dd0e556954c23eeeb8bfFe0E",
    "userId": "253149082"
  }
}