qmk_firmware/keyboards/merge/uc1/info.json

{
  "keyboard_name": "UC-1",
  "url": "https://mergedesign.store/products/uc-1",
  "maintainer": "duoshock",
  "width": 4.25,
  "height": 1,
  "layouts": {
    "LAYOUT": {
      "layout":   [
        {"label":"0", "x":0, "y":0},
        {"label":"1", "x":1.25, "y":0},
        {"label":"2", "x":2.25, "y":0},
        {"label":"3", "x":3.25, "y":0}
      ]
    }
  }
}