{
  "manageEntity": {
    "action": "Update",
    "entityId": "8744520",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":8744520,\"owner_id\":392916338,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":false},\"genre\":\"Pop\",\"isrc\":null,\"is_unlisted\":true,\"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\":\"2026-10-11T19:07:49.000Z\",\"title\":\"二神由美 - 抹茶の鍵盤 \",\"duration\":236,\"audio_upload_id\":\"432f7f83456999b5cd068e024b3af268\",\"track_cid\":\"baeaaaiqsedzu2bejmvvsza7s5thf6rb7yzlpmk2jlbirhr6u73igjpzfgpyuc\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsea5hwej3lqsycbe7aeo4iwtszdfses32evagbaq5i4okaps6sbeq2\",\"orig_filename\":\"☆抹茶と鍵盤.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":130,\"is_custom_bpm\":false,\"musical_key\":\"D major\",\"is_custom_musical_key\":true,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0x99d6170fe0c13d852de130d8d6ce5d30d93e6d82738feb38aa73cdcd35fa1a06",
    "signature": "0xd5caaf15b6bc15d9c550c99d321b73a4ded49310d20735fffa3866847b26dacb64745b3df7299d0ce376cf66a93e88d12e4ab173ad97ab0bdef2147d38537fa71b",
    "signer": "0x654f1b2DCF5eE0f42af2618ba269C1C8f8327BCA",
    "userId": "392916338"
  }
}