{
  "manageEntity": {
    "action": "Create",
    "entityId": "1608455006",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1608455006,\"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 30\",\"duration\":1889,\"audio_upload_id\":\"dfc74665af115e250b78b99454387422\",\"track_cid\":\"baeaaaiqseafhmardaayic7ptxccpcw5qqffzptwquzxyiyqf5tibhqlwrffus\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedd6ewl3ulejvhkpck6zj7u4g7iuekbri6ll36f7hceyy2uvw6cq2\",\"orig_filename\":\"Chapitre 30.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":125,\"is_custom_bpm\":false,\"musical_key\":\"G 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": "0x1781d440920108b524eec31655373720ae1bc59968cfa7e5e16def951339d5eb",
    "signature": "0x4618d9de221074109cdb90f4f1fac9acb03b90c11e5f3626ae4492db5c4c3df103e7613b4212cec4b83e1e04a1693506632c38129d9ebd407e6c6a07df65e6661b",
    "signer": "0x7B8ceC5EB9388Ac1045B7a1Ce60AE9235d6C6309",
    "userId": "743587390"
  }
}