{
  "manageEntity": {
    "action": "Update",
    "entityId": "489137111",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x7aaacb95c73e4659614e620e5c9b7552ec135b81977e5c5eff23d9f763217ed9",
    "signature": "0xb686b77166269caf126032b9bf11f717126dc3ce28af3dc43c893c928ef724fc0996194d21bd92a8cd4b1a97daf3ad9998ad44220dea08b6047b275c9264c6051c",
    "signer": "0x82825942955ce5712c1c89b3e5fD8193a6dB5170",
    "userId": "489137111"
  }
}