{
    "display": {
        "icon": "minecraft:beacon",
        "title": "Custom advancement",
        "background": "minecraft:textures/gui/advancements/backgrounds/nether.png",
        "frame": "challenge"
    },
    "criteria": {
        "instant_true": {
            "trigger": "minecraft:location",
            "conditions": { }
        }
    }
}