Add response signature validation functions. They're exactly the same as the request signature validation functions except they don't canonicalize the body.
This change was straightforward except for one curveball: we need to handle the JSON encoder adding a trailing newline.
Description
Add response signature validation functions. They're exactly the same as the request signature validation functions except they don't canonicalize the body.
This change was straightforward except for one curveball: we need to handle the JSON encoder adding a trailing newline.