curl --request GET \
  --url https://orbitflare.com/api/customer/v2/invoices/{invoice} \
  --header 'Authorization: Bearer <token>'

{
  "success": true,
  "data": {
    "reference": "INV26A1B2C3",
    "type": "<string>",
    "status": "draft",
    "currency": "USD",
    "billing_subtotal": 123,
    "billing_tax": 123,
    "billing_total": 123,
    "billing_balance": 123,
    "due_date": "2023-12-25",
    "created_at": "2023-11-07T05:31:56Z",
    "licenses": [
      {
        "license_key": "<string>",
        "product_name": "<string>"
      }
    ],
    "line_items": [
      {}
    ],
    "discount_code": "<string>",
    "discount_amount": 123,
    "payments": [
      {
        "transaction_id": "<string>",
        "gateway": "<string>",
        "amount": 123,
        "payment_date": "2023-11-07T05:31:56Z"
      }
    ]
  }
}