{ "center": { "lat": 53.5438, "lon": 9.9768 }, "height": 500, "markers": [ { "color": "blue", "coord": { "lat": 53.54129165, "lon": 9.98420576699353 } }, { "color": "yellow", "coord": { "lat": 53.54565525, "lon": 9.9680555636958 } } ], "overlays": [ "http://openfiremap.org/hytiles/{0}/{1}/{2}.png" ], "width": 800, "zoom": 15 }