{
  "manageEntity": {
    "action": "Create",
    "entityId": "321316205",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":321316205,\"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\":\"許容への問いかけ\",\"duration\":220,\"audio_upload_id\":\"c84a9fcb7c7741f0b89461ff752c07f4\",\"track_cid\":\"baeaaaiqseapnthwrm5otgdrp24ywhgjyl2hyr5cvoacpd5ai7r5oqwkgjoves\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebfwhcum6mzymtzzcmffrflmv7axmdktzjfx7v45teaxy7tiwqikc\",\"orig_filename\":\"許容への問いかけ.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":107,\"is_custom_bpm\":false,\"musical_key\":\"E 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": "0xbad3d2f99352d3f5f4036242877032a9a17fad7d6b31496ec72cffd43626f48d",
    "signature": "0x83519b55c5d28716c6bd9307ce82f478fe5990240b3707a7dae32923a151e0fe4b0147f7b1ba72f4ad7e0d0caafe06ab0458cb3b216b3e41c8ed03de042a835e1c",
    "signer": "0x749c79C88202c35aEb047D355394D7bdeF1e960c",
    "userId": "266636478"
  }
}