{
  "manageEntity": {
    "action": "Update",
    "entityId": "1852977293",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsea765ecarjk5grjvh5ut6cfgjns4xfgrlwafia5kwqfp5y3zo6ifc\",\"release_date\":\"2026-04-30T09:38:46.000Z\",\"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\":1777541937,\"track_id\":914289271},{\"timestamp\":0,\"metadata_timestamp\":1777541945,\"track_id\":438895}]}}",
    "nonce": "0x920157aaf2b9c52254e46bc2b6d507e82338abd4531895f1fbdb767e1e32f291",
    "signature": "0xc16c223cbf13d3a8003512f22a59173d04784b11719966ad451d343f452e9ee50a3e2d140858aca45999bc346d897ba01039c380ba4a39e47f897ac42a72bb1a1b",
    "signer": "0xff56e94800bDdD3478A34765243D06F0240D7BEf",
    "userId": "128375910"
  }
}