{
  "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},{\"timestamp\":0,\"metadata_timestamp\":1777541953,\"track_id\":2137013338}]}}",
    "nonce": "0xc303c3eac8136138af049800bd4757bb7db659931103f6429c8c860b9f75cd24",
    "signature": "0xccfb4f349a8763c7483a3fb053caac7b5b3829cda4ab4fe60acb306d3c417956430b71740ccb4e0dd4a1e19961c2e689bb37b240516981fc95d46106b975c91d1b",
    "signer": "0xff56e94800bDdD3478A34765243D06F0240D7BEf",
    "userId": "128375910"
  }
}