{
  "manageEntity": {
    "action": "Update",
    "entityId": "497088785",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xac60468d7e25457c4dfadc0ccb5137db3f9780f0fd4321a128fa3f1a30ed9c0f",
    "signature": "0x9377dac69f3445df21d24a7ec1d6776ad41ee829cee688c679dd1156541f262622ecf080c7d20afcf0785449418dd687d24f6bdd4d6fdeb69b0ef527f48644711c",
    "signer": "0x227cfc4c0d079aa632b32bB85efa344eb9D15ce2",
    "userId": "497088785"
  }
}