minecraft-assets/assets/minecraft/textures/gui/sprites/toast/system.png.mcmeta

{
    "gui": {
        "scaling": {
            "type": "nine_slice",
            "width": 160,
            "height": 64,
            "border": {
                "left": 17,
                "top": 30,
                "right": 4,
                "bottom": 4
            }
        }
    }
}