{
  "manageEntity": {
    "action": "Update",
    "entityId": "1034474609",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1034474609,\"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\":\"天国繁栄曲\",\"duration\":159,\"audio_upload_id\":\"d9890538f40a7f4121f23b816859acbd\",\"track_cid\":\"baeaaaiqsebrg36b3xoaols4suphwogswdgbut763kay2f3kid6q3qruvy5yj4\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedk6gyayjhyrt3wfc676sf4zmdhkq7qn2hivjdmyqzibkhkgsdpf2\",\"orig_filename\":\"天国繁栄曲.mp3\",\"is_downloadable\":true,\"is_original_available\":true,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":80,\"is_custom_bpm\":false,\"musical_key\":\"D flat\",\"is_custom_musical_key\":true,\"comments_disabled\":false,\"is_scheduled_release\":false}}",
    "nonce": "0x3ac77cbd624bd13b6d5a9fcaaba84d4f966f4463c99fa3ab1bdc7581cc190e02",
    "signature": "0xab7fce8aff6e154dab2455399db7abe83816430694a9337778b164a7b464e81902a72295bb8d6b1d7a80e32cab85c7a8acc173a12c7f1837b237c0487910c56e1c",
    "signer": "0x749c79C88202c35aEb047D355394D7bdeF1e960c",
    "userId": "266636478"
  }
}