{
  "manageEntity": {
    "action": "Create",
    "entityId": "598759162",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":598759162,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Ambient\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"Welcome To The End\",\"duration\":136,\"audio_upload_id\":\"1a74ba1d8dbabfba3633427126fd81ab\",\"track_cid\":\"baeaaaiqsed6zn7ific36dkhs4qncogfmlltpuayref6hevwp62ejiqzz7ot2k\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsec27fnulm7oulcw4zwwa6pqidyawjlvgicxxiqlzpum2u5jmr4hzk\",\"orig_filename\":\"Welcome_To_The_End.wav\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":120,\"is_custom_bpm\":false,\"musical_key\":\"C minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":796506769,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseaea4g2qtf6kmhayugxurycuwdcg26smofrz376w3bjdroxd7syg6\"}}",
    "nonce": "0x87e4be20c3ae88913fac73f2111a6996ada51eff1767dc938a363c4b6c946a0b",
    "signature": "0xbe39f5a475f4c066fd00838542495cafe528c49e5a72d3b94a1bc32c93f562b15e9a84fbe61c4a4f896a4c3040b8ed247013ede42e974add47efd6af039165191c",
    "signer": "0xb077b8D44B18982927EA77e71A59EF1317726d61",
    "userId": "796506769"
  }
}