{
  "manageEntity": {
    "action": "Create",
    "entityId": "1716259144",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1716259144,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"mood\":\"Peaceful\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"20090913\",\"title\":\"최현지 LIVE 국기에 대한 경례 2009\",\"duration\":44,\"audio_upload_id\":\"c9d8e5516d3dddf233d669dccd0ad663\",\"track_cid\":\"baeaaaiqsedr6ecugs26etxvheq4mv43qt4mog73plmzi5oqhzjn2ahnoi2lxg\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedcyxvkxsges2txq2lq2uzrggmqocrokuxbtqfizwj54uefvhan7w\",\"orig_filename\":\"14-5_국기에_대한_경례(맹세문_여자어린이).mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":113,\"is_custom_bpm\":false,\"musical_key\":\"B flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":734659738,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebypp3kabxpbdoviaqygij2rarvf7mzzjtfru57mbhz2vyf33qs7k\"}}",
    "nonce": "0x1a0899bd0efc356005cd78193fd8d5d3b698ad466145c09ec5f650e1f4ed0aa2",
    "signature": "0x56caa9b2f3c93d01313cc8f290328ec0e5eb75e346202b22e67c8d155a8bd57a4c0aa134993b5982a0b0465f2fa5e705a8771a3293cf5d13c5f448982320d6291c",
    "signer": "0x5440c29276C58761A1C9fac1CF686DACF3AF49b0",
    "userId": "734659738"
  }
}