{
  "manageEntity": {
    "action": "Update",
    "entityId": "645373542",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraqjn22u6g6vgdmpjgipamqw326cymhkdauhtdcjjdk3zpgb6n5xua\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":641843551},{\"type\":\"playlist\",\"playlist_id\":1192885099}]}}}",
    "nonce": "0xc5d5f182c2c05d8a848ee5fdbb9e3ed0124d633e604aa01b6346baffe1802cca",
    "signature": "0xf605f8d663ffc2de893771ba76cc84266c6c8b8d7094e4d5592df74c1b44550f621d05d8176450937f00d10d3c676537d33abb08749836ef17ae3e1fc6b534ed1c",
    "signer": "0xb332052fAaB9356cc95df81bB7214fE9C837197D",
    "userId": "645373542"
  }
}