{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xbadf3a183d89b91f45c0198f5c22b36f3c60c323210752d34c3f891a982dd019",
    "signature": "0x746465692d0250d3d0a0c9ded67d6e60259aabf6b9ddb46857935cbc6eac2c1343577ac7121b214f73bfd57a5f6632372bc936216901473caa4bbf741bb6a8941c",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}