curl --request GET \
  --url https://api.tread-horizon.com/v1/sites/{site-id}/additional_geofences/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
    "geofence": {
      "name": "<string>",
      "type": "<string>",
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "geojson": {
        "type": "<string>",
        "coordinates": [
          [
            [
              "<unknown>"
            ]
          ]
        ]
      },
      "circle_center": {
        "lat": 123,
        "lon": 123
      },
      "circle_radius": 123
    },
    "moving_geofence": false
  }
}