{
"name": "EXM",
"short_name": "EXM",
"start_url": "/",
"scope": "/",
"display": "standalone",
"background_color": "#f8fafc",
"theme_color": "#f8fafc",
"gcm_sender_id": "103953800507",
"share_target": {
  "action": "/api/share-target",
  "method": "POST",
  "enctype": "multipart/form-data",
  "params": {
    "title": "title",
    "text": "text",
    "url": "url",
    "files": [
      {
        "name": "image",
        "accept": ["image/*"]
      }
    ]
  }
},
"icons": [
  {
    "src": "https://cdn-icons-png.flaticon.com/512/10384/10384161.png",
    "sizes": "192x192",
    "type": "image/png"
  }
  ]
}