tools/object_settings/marker_settings_doorknob.json

{
    "gender": "unknown",
    "markersets": [
        {
            "distance_from_skin": 0.0002,
            "indices": {
               "doorknob3": 12925,
               "doorknob2": 2312,
               "doorknob1": 205,
               "doorknob4": 24147,
               "doorknob5": 41676,
               "doorknob6": 28860,
               "doorknob7": 29571,
               "doorknob8": 42631
            },
            "marker_radius": 0.0032,
            "type": "object"
        }
    ]
}