{
  "manageEntity": {
    "action": "Update",
    "entityId": "576874887",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaieraucs3ty7e6wyrnh3wsojwmlk46vcueonvhvoxnppokecmdgdt5vdq\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281},{\"type\":\"playlist\",\"playlist_id\":1029682136}]}}}",
    "nonce": "0xeae479a4f8b7318dc53bd0aee73bb08c6c19caee0ef56ed85f848fca990f4dd8",
    "signature": "0x43190c5295d8f807c637022dab30edb805f426e9f0efe5b46db0e36e0a1f811f6d74a6e6069e7cee16a3bfc7858d72f13e59fa1a058b95d6a24204e04e1f003b1b",
    "signer": "0x74Cfba397474D1C8E5568957E9684113ad5A2Bd8",
    "userId": "576874887"
  }
}