{
  "manageEntity": {
    "action": "Update",
    "entityId": "313755",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieralcomoun6nwlptowcxyn2qgjiwqggkt5uyvhdft3quzxpr4umlvvq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":37315},{\"type\":\"playlist\",\"playlist_id\":377636022}]}}}",
    "nonce": "0x627990fe192b20823a6e00fe2976e2f9f2471a20fc4863f98112aef4002751a3",
    "signature": "0x3f034e1b7d9fe1641b7aef6354e4dda0a24c96ff86393755f6f01fc37b46830f4c47950d91baa215ded40b9a845c47567a5847e4024d5bb8f0b0af2929496b311c",
    "signer": "0xDA488c3482B9F9C93147473A8AbFBd053d7cf465",
    "userId": "313755"
  }
}