I've successfully integrated Facebook Login to my mobile app. The mobile app has a server-side (ASP.NET) that must implement deletion callback (GDPR) acording to Facebook's guidance.
All works well (Facebook sucessfully calls my method), and I even have the implementation for the signed_request parsing.
HOWEVER - when I try to find the signed request parameter when the method executes, I can't find it!
the Content (Request.Content) of the call looks empty, the Uri doesn't have parameters, and I can't find the actual signed_request anywhere!
What am I missing?
I've tried decoding from Base64, ReadAsString, plain reading, nothing shows the parameter. It looks like the whole request is empty. Please advise, how can I find the signed_request in order to send it to my parsing method?
Thank you,
Yaron.