curl --request GET \
  --url https://services.leadconnectorhq.com/locations/{locationId}/customValues \
  --header 'Authorization: Bearer <token>' \
  --header 'Version: <version>'

{
  "customValues": [
    {
      "id": "rWQ709Pb62syqGLceg1x",
      "name": "Custom Field",
      "fieldKey": "{{ custom_values.custom_field }}",
      "value": "Value",
      "locationId": "rWQ709Pb6dasyqGLceg1x"
    }
  ]
}