{
  "manageEntity": {
    "action": "Update",
    "entityId": "275350856",
    "entityType": "User",
    "metadata": "{\"cid\":\"bagaaiera7f3gxhuaosrqciviaq64og6eyoefg5dtck6bc4vofjh4ddvvpyza\",\"data\":{\"events\":{},\"playlist_library\":{\"contents\":[{\"type\":\"playlist\",\"playlist_id\":4281}]}}}",
    "nonce": "0x744dcacf1eff1977d1edff27e54964d39a7639bf7d7b7bdf66f10c7596239d4e",
    "signature": "0x54f74e0382665af8807c727a6d2566b2ee4867c114b71b0c88de451629c5c0cb54b2a3d1bb18ff4aa0fb7a99fe8285f7224876b666f567b516e7fabc8bd5512a1b",
    "signer": "0x99cc71DF4121e0a865e7D094866224A204ae2b44",
    "userId": "275350856"
  }
}