curl --request GET \
  --url https://app.simcel.io/api/master/v1/customers/{ref} \
  --header 'Authorization: Bearer <token>'

{
  "ref": "<string>",
  "name": "<string>",
  "channel": "<string>",
  "subChannel": "<string>",
  "region": "<string>",
  "country": "<string>",
  "city": "<string>",
  "keyAccount": true,
  "shipTo": "<string>",
  "groups": [
    "<string>"
  ],
  "latitude": 123,
  "longitude": 123
}