curl --request POST \
  --url https://api.journeybee.io/v1/pricing-calculators/{uuid}/products \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "product_uuid": "<string>",
  "quantity_type": "fixed",
  "is_optional": false,
  "is_included_by_default": true,
  "quantity_fixed": 123,
  "quantity_variable_name": "<string>",
  "quantity_condition": "<string>",
  "quantity_if_true": 123,
  "quantity_if_false": 123,
  "price_override": 123,
  "sort_order": 123
}
'

{
  "uuid": "<string>",
  "sort_order": 123,
  "quantity_fixed": 123,
  "quantity_variable_name": "<string>",
  "quantity_condition": "<string>",
  "quantity_if_true": 123,
  "quantity_if_false": 123,
  "price_override": 123,
  "is_optional": true,
  "is_included_by_default": true,
  "product": {
    "uuid": "<string>",
    "name": "<string>",
    "sku": "<string>",
    "price": 123,
    "currency_code": "<string>"
  },
  "created_at": "<string>",
  "updated_at": "<string>"
}