How can I decode this data which is a sample payload? What is the encryption method?
this is the payload part from a post request sent with useinsider in an android application
{"payload":"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n"}
decode the relevant payload and learn the encryption method
I tried to decode it with simple encryption methods such as base64, but I failed. rather than learning the information in this payload, I need to learn what the data is encrypted with and how to decode it