{
  "manageEntity": {
    "action": "Update",
    "entityId": "504519602",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":false,\"playlist_image_sizes_multihash\":\"baeaaaiqseatoi7pdij7tfnjbrg5ylrlbp6rz57inbyr62vyrp6fcz6lmrs2ki\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":false,\"playlist_contents\":[]}}",
    "nonce": "0x96e8df3a6ae10f42ab30a9eeefedc134feffa5e613842c7d01e370ffd36a07bd",
    "signature": "0x6ed63c81db2ed12a02186c5367837c867df51a03764e60e9252e7901f8bf722747ec8ada3485326f6765507bb297f9f73c36439157f1ecd984d9dba82405f2cb1c",
    "signer": "0x2fff7071097d912DEaB17B33e448D7280cEe0723",
    "userId": "655790469"
  }
}