{
    "name": "My website",
    "icons": [
        {
            "src": "<?php echo get_template_directory_uri(); ?>/icon-192.png",
            "type": "image/png",
            "sizes": "192x192"
        },
        {
            "src": "<?php echo get_template_directory_uri(); ?>/icon-512.png",
            "type": "image/png",
            "sizes": "512x512"
        }
    ]
}