{
  "manageEntity": {
    "action": "Update",
    "entityId": "821028779",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xf9d72c46a27b47c7b164415c40c10fd63f4fe937d2dd7223d2b8f13845c110f7",
    "signature": "0x244241b3a892f8ed84ae0827df59d4b54f4a7d498d17db38a2c900c3df4cf6cf332bc2591959647c1d749c86732c4d8cbec8f30285fa00c138bdc43ac5803ec71c",
    "signer": "0x7f61d77e2C8991dDA50984F35d04D02DFFE561aC",
    "userId": "821028779"
  }
}