curl --request GET \
  --url https://api.sprucecollective.co.uk/api/merch/orders/{id} \
  --header 'Authorization: <api-key>'

{
  "address_line1": "<string>",
  "address_line2": "<string>",
  "callback_url": "<string>",
  "charges": {},
  "checkout_id": "<string>",
  "country_code": "<string>",
  "created_at": "<string>",
  "id": "<string>",
  "items": [
    {
      "assets": {},
      "attributes": {},
      "copies": 123,
      "created_at": "<string>",
      "id": "<string>",
      "merch_order_id": "<string>",
      "merch_product_id": "<string>",
      "recipient_cost_amount": 123,
      "recipient_cost_currency": "<string>",
      "sizing": "<string>",
      "sku": "<string>",
      "updated_at": "<string>"
    }
  ],
  "metadata": {},
  "payment_id": "<string>",
  "postal_or_zip_code": "<string>",
  "prodigi_order_id": "<string>",
  "recipient_email": "<string>",
  "recipient_name": "<string>",
  "recipient_phone": "<string>",
  "shipments": {},
  "shipping_method": "<string>",
  "site_id": "<string>",
  "state_or_county": "<string>",
  "status_details": {},
  "status_stage": "<string>",
  "town_or_city": "<string>",
  "updated_at": "<string>",
  "user_id": "<string>"
}