{
  "manageEntity": {
    "action": "Update",
    "entityId": "731609003",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieravfqz36db4a5v2bwhceap7vkqalm75om2h2bp3qt2vowqk5nrzh7a\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1281067356}]}}}",
    "nonce": "0x2e1f45fcdb53db36565ae4f406aa6acc7c0eb73654ea22872f02e024bcc1e66a",
    "signature": "0x5cd083da281c2b1445a188a882822806a6581c640cb149d718fa77272b00b9c05966f26f4dd85e61dc77a6eae7fb2c77f25cdf1f34e12b9568177d89dc2a9a521b",
    "signer": "0x0c418898D303C6a99dA7593Fb84D74F8b1962cB2",
    "userId": "731609003"
  }
}