How to send a message with default identity from TypeScript?

How to use in JavaScript/TypeScript HttpAgent (if needed) and Actor.createActor to send a message with default identity (I assume, it’s aaaaa-aa)?

I ask because my call without any identity to a non-query method fails with something about signature verification. So, I assume, it should have some identity and default identity would suit.

The default one generated by the bindings should be enough: https://github.com/dfinity/examples/blob/master/motoko/internet_identity_integration/src/greet_frontend/src/index.js#L5

The default identity (called the ‘anonymous’ identity) is 2vxsx-fae. The identity aaaaa-aa is the management canister. No call will ever come from that identity