{
	"icons": [
		{
			"src": "your_path/Berlin_de-192x192.png", 
			"type": "image/png", 
			"sizes": "192x192"
		},
		{
			"src": "your_path/Berlin_de-512x512.png", 
			"type": "image/png", 
			"sizes": "512x512"
		}
	]
}