def main():
    Cancellation = False
    dobj = json.loads(open('response.json').read())
    dpay = dobj['payload']
    header_list = dpay['headers']
    for i in header_list :
        if i["value"].startswith("Cancellation") :
            Cancellation = True
    for part1 in dpay['parts']:
        try:
            for part2 in part1['parts']:
                pay_data = part2['body']['data']
            # print(pay_data)
        except KeyError:
            pay_data = part1['body']['data']
    #open('F2encoded.txt', 'w').write(pay_data)