{
  "manageEntity": {
    "action": "Create",
    "entityId": "421663567",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":421663567,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":false,\"play_count\":false,\"remixes\":true},\"genre\":\"Acoustic\",\"isrc\":\"\",\"is_unlisted\":true,\"iswc\":\"\",\"license\":null,\"mood\":\"Other\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Dark Celsius\",\"duration\":174,\"audio_upload_id\":\"b664152889bfaf26fb53b0d180bcebc5\",\"track_cid\":\"baeaaaiqsecs7p3hvd3spz7xv2q32ks43pk3clzvz7yrk5drfmapwuutwwt5ui\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebmmpn6nzttanq5lzvryzf6vjo6cpmezkqxc4soiqhndvckknus4g\",\"orig_filename\":\"03-BENJAMIN-Dark Celsius [MASTER 48kHz 24bits Dithering].wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":108,\"is_custom_bpm\":false,\"musical_key\":\"D minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":696474749,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseayfcos3kgmk6dzqeltnwj55z76ts2bixuatarkkm2nikqy3iepqg\"}}",
    "nonce": "0x1c5e133cadbb7829bbcb9c54cba273e52c0160232e1a6c9329962a176fd27229",
    "signature": "0xddeca237a8deb6eb73dcd348f98d38a73657ed857386b4b8b27bce5d85ed40b6278de1159446457a6e5d08a87199f880d1776251946a68b3bfbf0c92d426e3701b",
    "signer": "0xA910f9900cB0e8aC94aa6d8ded41D39c1eFf8662",
    "userId": "696474749"
  }
}