Eg: [360590, 555610] - [lng, lat] in meters from google map api - GeoJson data
{ \"type\": \"FeatureCollection\", \"features\": [ { \"type\":
Are you sure that these coordinates are in a meter?
It may be EPSG: 27700 or EPSG:4326 so you can try with it.
and you this link QGIS for convert coordinates and It might be useful for you.