{
  "manageEntity": {
    "action": "Create",
    "entityId": "1439717049",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1439717049,\"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 39\",\"duration\":845,\"audio_upload_id\":\"01f9620730f0ab4a43bf4a00007820c5\",\"track_cid\":\"baeaaaiqsec7awb74yb24r46jlrgpupvcbq6glkzzc655aznxmujjswa76l5c6\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebjvcxctqvltczz7567osyyhrxjon6w4og3zpaxknsxnd3qvqqmt4\",\"orig_filename\":\"Chapitre 39.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":133,\"is_custom_bpm\":false,\"musical_key\":\"A flat 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": "0x726cbd943e078e1a46288bb77b97a0d50225ba77673ce3b6ab56c374b76531f4",
    "signature": "0xbb62fe0f65339fe68debcfa1a6320acccfb2d348f6ea2f3cd90933acee9eb3826bce800b44e0b75427dd136d8d30e85b4f1856a340ddcfc34279d75b73bcd30b1c",
    "signer": "0x7B8ceC5EB9388Ac1045B7a1Ce60AE9235d6C6309",
    "userId": "743587390"
  }
}