SignatureDoesNotMatch Error when using signed URL

Hi,

I am generating a signed URL to upload a file to S3 using lambda.

Following that, I copied the generated signed URL in Postman and sent a PUT request with the body type as 'none' which was successful. However, when I tried to do the same with the request body type as binary with a file I get the following error;

<Code>SignatureDoesNotMatch</Code> <Message>The request signature we calculated does not match the signature you provided. Check your key and signing method.</Message>