{
  "api_base": "https://signage.example.com",
  "api_token": "st_REPLACE_WITH_A_FULL_SCOPE_TOKEN",
  "overlay_base_url": "https://signage.example.com/aqi-overlay.html",
  "device_id": "DEVICE_OR_GROUP_ID",

  "lat": 45.5152,
  "lon": -122.6784,
  "location_name": "Portland, OR",

  "poll_interval_sec": 900,
  "position": "top-right",
  "width": 360,
  "height": 200,
  "border_radius": 16
}