curl --request GET \
  --url https://api-beta.pepay.io/api/v1/invoices/{invoiceId}/status \
  --header 'Authorization: Bearer <token>'

{
  "object": "invoice_status",
  "invoice": {
    "object": "invoice",
    "id": "550e8400-e29b-41d4-a716-446655440000",
    "merchant_id": 123,
    "status": "paid",
    "invoice_type": "standard",
    "currency": "usd",
    "amount": 49990,
    "amount_decimal": "49.990",
    "amount_unit": "usd_millis",
    "environment": "devnet"
  },
  "latest_payment": {
    "object": "invoice_payment",
    "id": "550e8400-e29b-41d4-a716-446655440111",
    "invoice_id": "550e8400-e29b-41d4-a716-446655440000",
    "merchant_id": 123,
    "status": "confirmed",
    "settlement_status": "settled",
    "currency": "usd",
    "amount": 49990,
    "amount_decimal": "49.990",
    "amount_unit": "usd_millis"
  }
}