curl --request POST \
  --url https://api.dev.monei.cc/api/v1/bills/validation/customer \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --data '
{
  "customer": "<string>",
  "billerCode": "<string>",
  "itemCode": "<string>"
}
'

{
  "statusCode": 123,
  "message": "<string>",
  "data": {},
  "errors": {}
}