Need help in validating Multiple JSON in Groovy script

Hi,

Could anyone plz help me in validating Multiple Jsons using groovy script.

Sample Json:

'[{"rangeStart": 0, "id": 0, "rangeEnd": "45", "fixedCost": 0, "unitCost": 0, "valid": true}, {"id": 1, "rangeStart": "45", "rangeEnd": "Unlimited", "fixedCost": 0, "unitCost": 0, "valid": true}]'

Thanks,
GSKKV.