curl --request POST \
  --url https://api.chessa.ai/v1/orders/{orderId}/confirm-sent \
  --header 'Content-Type: application/json' \
  --data '
{
  "notes": "Payment sent via bank transfer",
  "transactionReference": "TRF123456789"
}
'

{
  "id": "ord_123456789abcdef",
  "notes": "Payment sent via bank transfer",
  "sentAt": "2025-03-18T11:30:45.123Z",
  "status": "sent",
  "transactionReference": "TRF123456789",
  "updatedAt": "2025-03-18T11:30:45.123Z"
}