{
  "manageEntity": {
    "action": "Create",
    "entityId": "470525510",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":470525510,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Electronic\",\"isrc\":\"\",\"is_unlisted\":false,\"iswc\":\"\",\"license\":null,\"is_stream_gated\":false,\"stream_conditions\":null,\"is_download_gated\":false,\"download_conditions\":null,\"tags\":\"\",\"title\":\"CM_168_Syntax of the Sky (天語句法 La Sintassi del Cielo)\",\"duration\":227,\"audio_upload_id\":\"75c0a85b997f89c95202d228ccb4958b\",\"track_cid\":\"baeaaaiqseb643uuro6rxp3cq7bt4rrl35pani4wemcz3u4c7k5pv6epums4cc\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsecrcrcje2qzf3a6k4o4tbwvmesd5z35k7gu4ry3nm4dji2twjrerq\",\"orig_filename\":\"CM_168_Syntax of the Sky (天語句法 La Sintassi del Cielo).WAV\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":104,\"is_custom_bpm\":false,\"musical_key\":\"A minor\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":610888861,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqsecgzddby25hewykszhlebon26fcojekddtsfkswj6gln7ph6bxrcg\"}}",
    "nonce": "0x5a78e4a47f1cb95cde9d67c304f550d07e98dee957fe748a2c0c2867819905f4",
    "signature": "0x0214b84f23870c2b9ce12cab26a5f016487561ac832657ff42e54458ceda353d43644a116a6a81c267988044d3322d34aa9c7f6747257d202af0a0eda0d4ce811b",
    "signer": "0xf5BfE006B204417a4a7D6B64C2336EEE309eCc17",
    "userId": "610888861"
  }
}