{
  "manageEntity": {
    "action": "Create",
    "entityId": "1355819061",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1355819061,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":false,\"play_count\":false,\"remixes\":true},\"genre\":\"Audiobooks\",\"isrc\":null,\"is_unlisted\":true,\"iswc\":null,\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Chapitre 17\",\"duration\":479,\"audio_upload_id\":\"64164276dec4ac3b6625807f5be017c6\",\"track_cid\":\"baeaaaiqsecgar2gu5icaucos6qdtgaiiu6mvuhzstqoiphpnxwpypx23knb2s\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseb3jwepzkqeq5l4bmzbl6onyskp4372ymherhe2qg3cl74ddnsdbq\",\"orig_filename\":\"Chapitre 17.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":134,\"is_custom_bpm\":false,\"musical_key\":\"A minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":743587390,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebyklhscvopiz2r5qbl6jkj3tppnbuudlybjk4h52lods6tzfjpps\"}}",
    "nonce": "0xffc7ec55e88407833fcfbda63af91c13a68299cf7ffe139c7afc0cc40f4d3c54",
    "signature": "0x7239d67d6ca6b5895e7123d4ec08bead1cba97174f7db30e0df65702aac6ba9209c8048a4823dc5e28592c6c0146d2558f7302040d6f651d43dea598985e0a1d1b",
    "signer": "0x7B8ceC5EB9388Ac1045B7a1Ce60AE9235d6C6309",
    "userId": "743587390"
  }
}