What format returns S3 when using presigned URL to fetch data?

I got this value in body:

����JFIFHH��XExifMM*�i&���������"�����}!1AQa"q2���#B��R��$3br� %&'()*456789:CDEFGHIJSTUVWXYZcdefghijstuvwxyz���������������������������������������������������������������������������

And I don't know how to parse it. Either it's bytes or what?Would be very helpful if you provide an code snippet how to parse it in order to get URL to use it further in React-Native tag with parameter source={{ src='URL' }}

I tried Buffer, ArrayBuffer, encode (npm: base64-arraybuffer), base64 parse.Nothing works.I actually don't understand what format it is