{
  "manageEntity": {
    "action": "Update",
    "entityId": "1478600466",
    "entityType": "Playlist",
    "metadata": "{\"cid\":\"\",\"data\":{\"description\":\"\",\"playlist_name\":\"New Playlist\",\"is_private\":true,\"playlist_image_sizes_multihash\":\"baeaaaiqseaxpxfhoyz4us2pupz623zuawuuh6l24a5nigwp6q2pnnyecbd33k\",\"release_date\":\"2026-04-21T07:47:02.000Z\",\"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\":1776757710,\"track_id\":600576}]}}",
    "nonce": "0xe73fc63ea80361f2093d0abaafd75173a8ee45c80410fd2e147eb068dabb2161",
    "signature": "0x19e889b4d933a212e30661ca4e90cd96f03807cbf624cb9b49b5f5f62774721639f164a8a00be670d0dd8811170009e46c106bc2d7176bfaaa022ef796204f801c",
    "signer": "0x35c139bC26b7c5CFB9185f419fba3245c0353cFa",
    "userId": "158234527"
  }
}