{
  "manageEntity": {
    "action": "Create",
    "entityId": "1947376460",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":1947376460,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Hip-Hop/Rap\",\"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\":\"left4dead rap battle\",\"duration\":66,\"audio_upload_id\":\"4ccac05e94039df17fbc8c6d7b67f6c6\",\"track_cid\":\"baeaaaiqsecg5ftugbulvr4p45rq76b2szvqoeu7zc73k6bl2vadjtmusi2tis\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedg6o6jkaks4gbm6ema435fgjso72fybczjzbpctfftffdsak5l6k\",\"orig_filename\":\"left4dead.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":127,\"is_custom_bpm\":false,\"musical_key\":\"B minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":420563019,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsebf5ny7jd3reuwiaiikiu4joo7epxnlx4m7mk2o6uhpuppaywkrls\"}}",
    "nonce": "0x4194d7a85dac13b8307fff7d0e392b36926a4ab210e8acd7b88555108e076caa",
    "signature": "0x07bedd62f1188f4fdc76a72ee5c9c1ecfd6374dedb9149102339781e6f65bc3623b5837056ca51f91905a8a09d9af19e11d490c4456ae2647a2305c4b32cf0b31b",
    "signer": "0x2897361b4DC9b730012F28B290F72c1285C3e121",
    "userId": "420563019"
  }
}