import { GenericExtrinsicV4 } from "https://dotland.deno.dev/x/polkadot@0.2.45/types/extrinsic/index.ts";
x/polkadot/types/extrinsic/index.ts>GenericExtrinsicV4#addSignature
import { GenericExtrinsicV4 } from "https://dotland.deno.dev/x/polkadot@0.2.45/types/extrinsic/index.ts";