{
  "manageEntity": {
    "action": "Update",
    "entityId": "545607016",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera75nb3s2us3qjgns4iddzc365fazzvgtykh47vbfnt7sl4yc3ausq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":71260667},{\"type\":\"playlist\",\"playlist_id\":10482068},{\"type\":\"playlist\",\"playlist_id\":2335197}]}}}",
    "nonce": "0x827fbde81570973a8d18bb6246d5ae7533660e624f510bae8903401d41127668",
    "signature": "0xb106b37e5542211581ba8ef161c9865fc08023aebb53ee6b23d70ca02073f2d71c1859e847b0adad95fd3d22e5c63b481f1afabfdc393136146fad7a8c4174c51b",
    "signer": "0xaB9c9D866876B7d33f01b1363339Ce0Dd23c623A",
    "userId": "545607016"
  }
}