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GeoPoint is a special type and can accept several formats as input:

• lat and lon as properties, as shown here:

{
"customer_location": {
"lat": 45.61752,
"lon": 9.08363
},

• lan and lon as string, as follows:

"customer_location": "45.61752,9.08363",

• geohash string, as shown here:

"customer_location": "u0n7w8qmrfj",

• As a GeoJSON array (note in it lat and lon are reversed), shown in the following code snippet:

"customer_location": [9.08363, 45.61752]