Trouble using GEOJSON link for mapping area and length shapes

Hi everyone,

I have loaded a GeoJSON API into Power BI as it has the UK shape boundries I need for my report. However, I am having difficulty when trying to create the map. I have a column for lat/long and also for the area shape and length shape, which I have added for you to see. When I create a map, I am not sure where the area shape and length shape fields go to create my boundry shapes on the map. Could someone help me with this please? 

snip of the table