- hosts: localhost
   connection: local
   gather_facts: no
   vars:
     users:
       - name: alice
         authorized:
           - /tmp/alice/onekey.pub
           - /tmp/alice/twokey.pub
       - name: bob
         authorized:
           - /tmp/bob/id_rsa.pub
 
   tasks:
   - debug: msg="user={{ item.0.name }} key='{{ item.1 }}'"
     with_subelements:

     - "{{ users }}"

     - authorized