how to arrange this json into datatables,its from php

svignesh

i've been trying this on for days now i'm not able to get these into columns: [data:
so this is my json file:

{"campaigns":{"campDetails":[{"campaign_id":"1012","campaign_name":"RP - Axe Sample (Submit)"},{"campaign_id":"2024","campaign_name":"RR - Axe Soap (Submit)"},{same sequence},{same sequence}]}}

is you took tell me step by step on how i may be able to arrange these into colums such as campaign id,campaign name ... etc I would be very happy,
regards.