{
  "manageEntity": {
    "action": "Update",
    "entityId": "738409490",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsec2eiohneyjljrvtk3xngufk4vck7djzbr7cufd464m3oot7b6hky\",\"release_date\":\"2025-04-25T13:15:18.000Z\",\"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\":1776698351,\"track_id\":590519}]}}",
    "nonce": "0x8f1924aaf7a6e2338cffdbba8ca579160081c792ad087b7e5a8d7668c7639016",
    "signature": "0x394ec6edceebe3fad9a68a729d818e5a9162e3b28c724dc501dbbd27fdf3a0597ae4103e199150174ca55da8561fe911b1420e35339012438475f67cbf6b3b721b",
    "signer": "0xDdae885CaD98Cd67fd3bf362CDe95fB5460194Fa",
    "userId": "327439395"
  }
}