Get the supplier invoice

{
  "invoice_number": "<string>",
  "currency": "AED",
  "amount": "<string>",
  "currency_amount": "<string>",
  "currency_amount_before_tax": "<string>",
  "date": "<string>",
  "deadline": "<string>",
  "currency_tax": "<string>",
  "tax": "<string>",
  "id": 123,
  "label": "<string>",
  "exchange_rate": "<string>",
  "public_file_url": "<string>",
  "filename": "<string>",
  "remaining_amount_with_tax": "<string>",
  "remaining_amount_without_tax": "<string>",
  "archived_at": "<string>",
  "created_at": "<string>",
  "updated_at": "<string>",
  "v1_external_id": "<string>",
  "v2_id": 123,
  "supplier": {
    "id": 123,
    "url": "<string>"
  },
  "source": "billy_import",
  "reconciled": true,
  "external_reference": "<string>",
  "payment_status": "to_be_processed"
}