Check existing data in other domain

I’m new in CQRS and Axon and I have probably stupid question but I have to ask…
Is possible to check if data exists between different microservices/domains using Axon?

Domain1: User management
Domain2: Account management
When I’m creating new account in D2, I want to add reference to user from D1 which owns this account. I do this by sending creating command with user’s id.
But I would like to check if user with this id really exists in D1… Is possible to check this with Axon (ideally with gRPC usage) somehow? Or I have to use some other technique/client?

Thank you for answer