import { GenericExtrinsicV4 } from "https://dotland.deno.dev/x/polkadot@0.2.35/types/bundle.ts";
x/polkadot/types/bundle.ts>GenericExtrinsicV4#addSignature
import { GenericExtrinsicV4 } from "https://dotland.deno.dev/x/polkadot@0.2.35/types/bundle.ts";