{
  "manageEntity": {
    "action": "Create",
    "entityId": "1780120713",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1780120713,\"description\":\"GarageBand version\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Pop\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Empowering\",\"is_stream_gated\":false,\"stream_conditions\":null,\"allowed_api_keys\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Brother Louie (2)\",\"duration\":244,\"audio_upload_id\":\"a73b75cbf5e76c110fe7f60c5f25d906\",\"track_cid\":\"baeaaaiqsebypvbycr4ymwh6h24x7j7zmf3jgahsxmdtzbrd63lt4gdih3uhfy\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqseasngohe5naculgmudhdrtkr4oqwycfvapackqhkthq6cpiqem4mo\",\"orig_filename\":\"Brother Louie (2).m4a\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":114,\"is_custom_bpm\":false,\"musical_key\":\"D flat minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":850416615,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseaxb3q36eraca3ewf6njv7gpsv3hokyt7uyf4yj5omo7holivjhfm\"}}",
    "nonce": "0xcbd86aad7460c24601e2f5f22b0c85b7c6cc2cf26a8e0d65d2caaf5c3c785c6f",
    "signature": "0xf961f6c07c41be507a40aaff4067555092a31e3f5f73f218329962a39fda995c57a38ef75b4517db0391adeda9dd92040d52ae95f71df5031708b08a33e21d3c1b",
    "signer": "0xB57F94Ef9a26d73E8b35D3f37FccD18BcC7eeE00",
    "userId": "850416615"
  }
}