curl --request POST \
  --url https://demo.onlinebillingform.com/api/v2/invoice/update-transaction \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "invoice_id": 123,
  "transaction_id": 123,
  "amount": 123,
  "status": 123,
  "gateway_id": 123,
  "message": "<string>",
  "json_response": "<string>",
  "transaction_key": "<string>"
}
'

{
  "success": true
}