Paypal IPN Response when user manually cancels recurring subscription

[Peter]

WHEN USER CANCELS:

PAYPAL SENT:
do=_paypal
&txn_type=subscr_cancel
&subscr_id=S-C7991147R345173H
&last_name=###
&residence_country=CA
&mc_currency=USD
&item_name=Recurring+Subscription
&amount3=1.00
&recurring=1
&verify_sign=AcbR1LI800cFNscHXMQl-AND0msaAJB3tS2nSkLBac8OVBAT6f.x80tP
&payer_status=verified
&payer_email=user%40domain.com
&first_name=First
&receiver_email=owner%40domain.com
&payer_id=X8AWQZ3H2RYL6
&reattempt=1
&item_number=2
&payer_business_name=BUSINESS
&subscr_date=12%3A26%3A39+Apr+24%2C+2007+PDT
&custom=CRlSO2NYCQcDPCFnFgsAGiEJMCBeXn5JAxEPMFJnWE9oIiZUQkMgdy4pTw4PajQ %2FUCRaSxwwIzQWVmoWCAhVTzpGfBlFAQJeHl9zNSwdN3c%3D
&charset=windows-1252
&notify_version=2.1
&period3=1+M
&mc_amount3=1.00
&cmd=_notify-validate