qmk_firmware/keyboards/8pack/rev11/keyboard.json

{
    "usb": {
        "device_version": "0.0.1"
    },
    "layouts": {
        "LAYOUT": {
            "layout": [
                {"x": 0, "y": 0, "matrix": [1, 3]},
                {"x": 1, "y": 0, "matrix": [1, 2]},
                {"x": 2, "y": 0, "matrix": [1, 1]},
                {"x": 3, "y": 0, "matrix": [1, 0]},
                {"x": 0, "y": 1, "matrix": [0, 3]},
                {"x": 1, "y": 1, "matrix": [0, 2]},
                {"x": 2, "y": 1, "matrix": [0, 1]},
                {"x": 3, "y": 1, "matrix": [0, 0]}
            ]
        }
    }
}