{
  "manageEntity": {
    "action": "Create",
    "entityId": "1919890688",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1919890688,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2026-10-06T12:43:36.000Z\",\"title\":\"美夜理の矛盾\",\"duration\":185,\"audio_upload_id\":\"d59e3592dd7b7332189ce0ca3d6f864b\",\"track_cid\":\"baeaaaiqseasjav2aptxyiqakqtfqlbsuxlemejmrdrg2ug73va5u4fmkd2av4\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseb3zomrd4e6zg5mnnaq2nqx54fb2wmccern4ufgenbh44fj3kjup4\",\"orig_filename\":\"美夜理の矛盾.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":100,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":266636478,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsedfvdb2cjgi4q4j7srfbqeqkraanxybuuhkg64kvo6znqxwhqmr6c\"}}",
    "nonce": "0x75a8888cf1058c28dde721bffbd87444c7f0e3f7352242d823bd561aa28d3449",
    "signature": "0x3f4ef538e60220d7a91acaee603ed1d75d71f1733b68a646d814981ff5938a2151b150ed0963a280ce283038fb7c10e0579644d21bad3f1594260bf78c2072ac1b",
    "signer": "0x749c79C88202c35aEb047D355394D7bdeF1e960c",
    "userId": "266636478"
  }
}