Create/Register new user without master realm account bearer

Is that possible to create an user without any bearer from master realm account?

For example i create a new user that get high role in the realm (still unable to figure it out how to assign admin-cli to the new user), then i use that user to getting the bearer token, and then i use the token itself to create new user, is that possible?

The main reason that i wont use master realm user name password is for security purpose because that thing will be shared to many developer and that is very big no.

Any explanation will be appreciated, thank you in advance.

Regards,
Sigit

Maybe this helps Keycloak Admin Client in Spring Boot