{   "name": "", 
    "short_name": "", 
    "icons": [ 
        {   "src": "/static/img/favicons/192x192_2.png", 
            "sizes": "192x192", 
            "type": "image/png"
        }, 
        {   "src": "/static/img/favicons/512x512_2.png", 
            "sizes": "512x512", 
            "type": "image/png" 
        } 
    ], 
    "theme_color": "#ffffff", 
    "background_color": "#ffffff", 
    "display": "standalone"
}