{
  "manageEntity": {
    "action": "Create",
    "entityId": "2040595413",
    "entityType": "Track",
    "metadata": "{\"cid\":\"\",\"data\":{\"track_id\":2040595413,\"description\":\"\",\"field_visibility\":{\"mood\":true,\"tags\":true,\"genre\":true,\"share\":true,\"play_count\":true,\"remixes\":true},\"genre\":\"Pop\",\"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\":\"006_タッタラプリズムゲーム\",\"duration\":161,\"audio_upload_id\":\"5ef2b15a0e45a8ba5892a3b4cdbd0cbe\",\"track_cid\":\"baeaaaiqsebma2i2dre5wrraghoquvtgaheaypcjfvkurggvnbkcz42ejlagek\",\"preview_cid\":\"\",\"orig_file_cid\":\"baeaaaiqsebgccmclj3h3pm4m5pvqczj2lbcv4yamsdd55pxhdxkvnm5wuvmle\",\"orig_filename\":\"006_タッタラプリズムゲーム.mp3\",\"is_downloadable\":false,\"is_original_available\":false,\"is_playlist_upload\":false,\"ddex_release_ids\":null,\"ddex_app\":\"\",\"parental_warning_type\":null,\"bpm\":135,\"is_custom_bpm\":false,\"musical_key\":\"E flat major\",\"is_custom_musical_key\":false,\"comments_disabled\":false,\"is_scheduled_release\":false,\"owner_id\":458983216,\"audio_analysis_error_count\":0,\"cover_art_sizes\":\"baeaaaiqseav6mwmkdvks5geyq5twic4x5k7lwtnv5fnivtgzuelcqnwirfrn2\"}}",
    "nonce": "0x4b514f60b0d9b8b7c98079d3ce3b76b4f1947a68f336a02b65b8ee90d0fb6e60",
    "signature": "0x9333591d2830890096c20ddf1ebad26db804b670e179779c702d77acbc5355636e6318000c072205dcbc1506cd16a95129b06a29857b12c1cd8dd1fc83bf3b101c",
    "signer": "0x78DE158d2b9e947384f8B719989897147c9d627C",
    "userId": "458983216"
  }
}