{
  "manageEntity": {
    "action": "Update",
    "entityId": "505182311",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0xad9017813a7490cfba7c9354781cde4f87fe6fe2f6c3077daacb43d54b9b66a1",
    "signature": "0xae108d9f2a7c3b795b65697fe67ef9301af68894e5cf28df4c334e78adeee7f4637b4517859edc774466bc83278e99eac917c4bbf71c8c7c5e5c9362e86310a81b",
    "signer": "0xA819E5C5714510Db532e726DB8526f18026feA20",
    "userId": "505182311"
  }
}