How and where can I find the client role in access token?

My setting:

spring boot for backend
keycloak 18.0

My workflow:

  1. i have one client: webshop-client
  2. I have default client-role: customerAccessRole

I expect:
when registering in client new user e.g. “” gets automatically assigned default role “customerAccessRole”.

In spring boot I want to read this role from the access token.
Max I find there

realm_access={"roles": .....

But I don’t find there client_role

I need help