{
  "manageEntity": {
    "action": "Update",
    "entityId": "533036877",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":533036877,\"owner_id\":266636478,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Electronic\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"collaborators\":[],\"is_download_gated\":false,\"download_conditions\":null,\"release_date\":\"2026-10-19T10:05:41.000Z\",\"title\":\"残酷な行進曲\",\"duration\":139,\"audio_upload_id\":\"7589e701821b33737dfde7fcf11a0120\",\"track_cid\":\"baeaaaiqsebtsilcy3xbohet75yakn7xqwkwarvnuxxtikql235s7vkovl5hvo\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseb2taf3fk4zzbvdy3zpd7sgoluiowoqqydvv3at273kb6iirjiv7q\",\"orig_filename\":\"残酷な行進曲.mp3\",\"is_downloadable\":true,\"is_original_available\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":107,\"is_custom_bpm\":false,\"musical_key\":\"G minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0x55fca46b0cdade9e43cc54bd1b2ddea781d87d799d011a4683cfa99f393fe5f0",
    "signature": "0x6226422ec6ab7992e83bddfcea0cc986003db300dc7b6a2e17cce676cfc092986402ea0eaa39de125ef823168d74d151c6249b6de89f9c3332f52b43d7ada7ba1c",
    "signer": "0x749c79C88202c35aEb047D355394D7bdeF1e960c",
    "userId": "266636478"
  }
}