curl --request GET \
  --url http://127.0.0.1:8080/api/v1/properties/{property_id}/billing-settings

{
  "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "organization_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "property_id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
  "billing_day": 123,
  "due_day": 123,
  "electricity_unit_price": 123,
  "electricity_fixed_amount": 123,
  "water_unit_price": 123,
  "water_fixed_amount": 123,
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}