{
  "manageEntity": {
    "action": "Update",
    "entityId": "328039162",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqsebr2furyirgacoemfcxczmkexin2bvdeyxmox5ncp2bzbmbjnvdi2\",\"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\":1775687268,\"track_id\":1727790941},{\"timestamp\":0,\"metadata_timestamp\":1775687270,\"track_id\":321523029}]}}",
    "nonce": "0x446fa872b8bd2d31bf1bd6bca0899d7045249af65433feca22e39ad100f74363",
    "signature": "0xf12a30a3aba79dcffa49cd1d4c1a59728711aef1ab4855ff1013f41e3d9c125675ddf64bf496a3ad27609a74478c3ddb4426d1f132ed97f5c0a0598bd936d9211c",
    "signer": "0xDc3E8455192174BB859F815e8840855e17449589",
    "userId": "267643931"
  }
}