{
  "manageEntity": {
    "action": "Update",
    "entityId": "215292509",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqseayaesozr7majrbrkfhvc6nvhnebfxtzo6jwzl2cqla66u3wsi4yc\",\"release_date\":\"2026-05-21T19:56:41.000Z\",\"ddex_release_ids\":null,\"ddex_app\":\"\",\"upc\":\"\",\"artists\":null,\"copyright_line\":null,\"producer_copyright_line\":null,\"is_image_autogenerated\":true,\"playlist_contents\":[{\"timestamp\":0,\"metadata_timestamp\":1779393445,\"track_id\":1605946302}]}}",
    "nonce": "0xa34095a65ea99fc76268931be689dc0aff82946c2e388b6af7b51fe24848b6fa",
    "signature": "0xf433dbf38d2ddb1ef667bfd53c74cb07b8b88cc358f14180d812b5764cfc2bbb0d8222a350aa38a9f99e02dd4e0af1a36a21fff574a80e0281bfaed3faaf1fd01b",
    "signer": "0xD7c3dC9EEf2D94568C0e1A9C88b58696850c7C22",
    "userId": "125737"
  }
}