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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def modify_subscription_status(netid, subscription_code, status):
 """ Post a subscription 'modify' action for the given netid and subscription_code """

    url = _netid_subscription_url(netid, subscription_code)
    body = {
        'action': 'modify',
        'value': str(status)
    }

    response = post_resource(url, json.dumps(body))
    return _json_to_subscriptions(response)