{
 "id":"/", "name":"おもてなしOS", "short_name":"おもてなしOS", "lang":"ja",
 "start_url":"/?screen=staffmessages", "scope":"/", "display":"standalone",
 "background_color":"#ffffff", "theme_color":"#173e36",
 "icons":[
  {"src":"/staff-push-icon-192.png","sizes":"192x192","type":"image/png","purpose":"any maskable"},
  {"src":"/staff-push-icon-512.png","sizes":"512x512","type":"image/png","purpose":"any maskable"}
 ]
}