import { COSESign1 } from "https://deno.land/x/lucid@0.10.5/src/core/libs/cardano_message_signing/cardano_message_signing.generated.js";
For verifying, we will want to reverse-construct this SigStructure to check the signature against
Arguments
external_aad- External application data - see RFC 8152 section 4.3. Set to None if not using this.