Survey results in encrypted form

Hello all, I tried to get the survey results by using the following steps: 1) I made a get requests to get the list of survey Id's 2) Later, I used a post request to get the progress Id for one survey Id 3) using that progress Id I made a get request to get the file Id 4) Then I made a final get request for the survey results pertaining to a specific survey Id. But ended up giving special charecters. I tried both postman and Qlik but gave the same results. So, Can you please help me fixing this issue!