curl --request GET \
  --url {schemes}://api.upsun.com/organizations/{organization_id}/invoices/{invoice_id} \
  --header 'Authorization: Bearer <token>'

{
  "id": "<string>",
  "invoice_number": "<string>",
  "type": "invoice",
  "order_id": "<string>",
  "related_invoice_id": "<string>",
  "status": "paid",
  "owner": "<string>",
  "invoice_date": "2023-11-07T05:31:56Z",
  "invoice_due": "2023-11-07T05:31:56Z",
  "created": "2023-11-07T05:31:56Z",
  "changed": "2023-11-07T05:31:56Z",
  "company": "<string>",
  "total": 123,
  "address": {
    "country": "<string>",
    "name_line": "<string>",
    "premise": "<string>",
    "sub_premise": "<string>",
    "thoroughfare": "<string>",
    "administrative_area": "<string>",
    "sub_administrative_area": "<string>",
    "locality": "<string>",
    "dependent_locality": "<string>",
    "postal_code": "<string>"
  },
  "notes": "<string>",
  "invoice_pdf": {
    "url": "<string>",
    "status": "ready"
  }
}