Paypal IPN Response when admin manually refunds recurring subscription via paypal.com

[Peter]

PAYPAL SENT:

do=_paypal
&payment_date=12%3A08%3A51+Apr+23%2C+2007+PDT
&subscr_id=S-5SP20661A3347144V
&last_name=Last
&residence_country=US
&payment_gross=-1.00
&mc_currency=USD
&business=user%40domain.com
&payment_type=instant
&verify_sign=AiZ0qgxAGbse9fgbheQO3Jgvs4vTAk6yOqppwbB73hR6JnNyoi4K2nr7
&payer_email=user%40domain.com
&txn_id=4R541200HD400525C
&receiver_email=user%40domain.com
&first_name=First
&parent_txn_id=2M638512DB773553K
&payer_id=8865HVZDBZDA8
&receiver_id=8AMS6DZR7YRWW
&reason_code=refund
&item_number=2
&payment_status=Refunded
&payment_fee=-0.33
&mc_fee=-0.33
&mc_gross=-1.00
&custom=W0sBaGRfAw0IN3E3QVxRSyEJZ3cNDSIVAhACPQE0DRpqIHcFRUQjdCYhHl8GZ2Z tBHALGhk1ITZCAmgUDQ0EHmgUL0pCBghUFVQjZXtKZiY%3D
&charset=windows-1252
&notify_version=2.1
&cmd=_notify-validate