{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xd10f77327ec76d950a81eb034eae8af5f5e450df9a10dc93f7826d1e746392af",
    "signature": "0xc958ac2c21f0b989654db37e8456883b4dadbce12c0b43a17bfe9b3a86e3f36866ef32d0cfb479070cc16261cb87283ab245630a1a35e2b76c2b716373a674e71c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}