{
  "manageEntity": {
    "action": "Update",
    "entityId": "672251661",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7mhprn3ifwwxreoipxdevqux53ndv3ltsemr75bnst362twbocla\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1226788298}]}}}",
    "nonce": "0x8718d483e4098f18840ba31f98305d67b0a3c4042b07fdcb222c75d1b3dd05a5",
    "signature": "0xdcf4cddc31f2eb17a9093d649d43945480b0f73aced47f0d0ffe1f79b8c412734ea1073ebe5b82cfc710588d43f8c3ae7d6318c4b53175cd502a3bf4a0fbe3f61b",
    "signer": "0xC5Ee9a72D83C8Dae889645372774B75CB639c662",
    "userId": "672251661"
  }
}