curl --request POST \
  --url https://api.bullring.finance/v1/banking/ngn/validate \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "accountNumber": "0062881117",
  "bankCode": "270"
}'

{
  "accountNumber": "0062881117",
  "bankCode": "270"
}