{
  "manageEntity": {
    "action": "Update",
    "entityId": "1891640738",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1891640738,\"owner_id\":218692613,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Hip-Hop/Rap\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2026-05-13T10:58:44.000Z\",\"tags\":\"\",\"title\":\"02 - 宿望\",\"duration\":162,\"audio_upload_id\":\"21e49b0073968f543bee38085f96df73\",\"track_cid\":\"baeaaaiqsear7ompa2mg3eh2bnkeyzhjrhkdmpsh5qphcwkqmnjetpqlfcmgfq\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseddalljhhlmrug2zmcurq7qspn3mqwsreglnmik3c6np377ivdd2i\",\"orig_filename\":\"02_shukubou0823-2.mp3\",\"cover_art_sizes\":\"baeaaaiqseacwe5wbc2rt2qtbopilua4chsx2n4wx36rr3xitkjiipj5y66lna\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":120,\"is_custom_bpm\":false,\"musical_key\":\"A flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0xeda239f18056b965ce43e8df1d3cb380ce722ce001a75b2ec8d70dda09b5293b",
    "signature": "0x889564a09233ee335aeea3e256afc6ab07a9f1cdabca61eadb06b30fdf2ad1c915f39916d9a0270e7c097a7a8df1e72fae4d33278745cc17c1ae85b55ea7d4391c",
    "signer": "0x6CDDC7B674Dd0fbE8fB2850B79b97aA2A37Aa071",
    "userId": "218692613"
  }
}