pub fn make_expected_signature_for_test(
signing_key: &SigningKey,
request_metadata: &RequestMetadata,
response_body: &[u8],
) -> Vec<u8>pub fn make_expected_signature_for_test(
signing_key: &SigningKey,
request_metadata: &RequestMetadata,
response_body: &[u8],
) -> Vec<u8>