Rails - Aug 2009 - How to get payment transaction notification from paypal?

Hello,

I used service merchant plugin for subscription and recurring billing
for my application.

I can get transaction details form authorize.net using "silent post"
feature.

Now I want to get  recurring payment transaction notification (IPN) form
paypal. Is there facility included in service merchant, which gives me
transaction details for each user subscription, using paypal.?

please give me solution .
or
sample code for that.

Thanks,
Vikas Gholap.
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