The GeoPoint field is used for Geolocation coordinates. It works by adding coordinates or by pasting a Google Maps URL.
Assign the GeoPoint field a Field name that will display in the entry editor and an API ID.
The following is the JSON code for adding a GeoPoint field:
"label": "Shop location"
"type": (string, required) Value must equal "GeoPoint"
"config": (object, optional) Options listed below
"label": (string) Sets the label that shows up for the field in the entry editor