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I am using the latest Facebook sdk for .net, using which I am trying to set up a webhook. Which would notify me of any change in the user feed.

When I try to set up the webhook on the Facebook app, it fails to verify the challenge. And gives an attached error. It shows an extra Single Quote around the expected value. If observed the value received is correct excluding the extra quotes.

Do give your suggestions as to where I might be going wrong.

Please see the attachment -[^]

What I have tried:

Have searched over Google , have asked over stack overflow for the help.Have tried programatically to remove the quotes before the challenge is sent.
Updated 7-Jun-16 21:14pm

You'll need to contact facebook support. You did not post any code so there is no possible way for us to know how to help you. Regardless, facebook support is the best place to go.
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Found the issue . It was related to what is said in this link c# - Strings sent through Web API's gets wrapped in quotes - Stack Overflow[^]
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