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https://s3mvaudio2.s3.us-east-2.amazonaws.com/courses/test.pdf?X-Amz-Content-Sha256=UNSIGNED-PAYLOAD&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=1HPS101KFMM8SKNK9BG2%2F20260902%2Fus-east-2%2Fs3%2Faws4_request&X-Amz-Date=20260902T000332Z&X-Amz-SignedHeaders=host&X-Amz-Expires=1000&X-Amz-Signature=a40ba54b13e5369ab25fae93f36dd0ec257e6963185859e1cd82bad535d58463