{
  "manageEntity": {
    "action": "Create",
    "entityId": "403298593",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":403298593,\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Ambient\",\"isrc\":null,\"is_unlisted\":false,\"iswc\":null,\"license\":null,\"mood\":\"Cool\",\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"title\":\"Mru2\",\"duration\":13,\"audio_upload_id\":\"ba807fca5e9be25a355c2f972704b2e4\",\"track_cid\":\"baeaaaiqseavqxo2wywy7wydfgld77feuojacz6acwzamczmqao6kg6cqi5jsy\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsedqpuchuwjtgbszrp2ebyo22cyhb4lrct45d25fggmmekdvqseqs4\",\"orig_filename\":\"14 Track 14.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":144,\"is_custom_bpm\":false,\"musical_key\":\"E flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":true,\"is_scheduled_release\":false,\"owner_id\":45685346,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsed77sdglaxx5euenxn7pqh4s2egsly6ezu5baiyv2zymtqrtwymkg\"}}",
    "nonce": "0xd141a37228ec9377f1c3b1d73e9faa002b18ef7d224e2ceba5e713715a0c245c",
    "signature": "0xd5263924db5d376a9efdf6463a1462c20cf4f977bf60f761a15084016fb0f4d07130f3a7d1a7d05baf8ea156eb8d31f68239f5eb3682353c8c1aaaf778412c891c",
    "signer": "0x631844cB3F56AdC5b70146AC8bFa359c100448b6",
    "userId": "45685346"
  }
}