test

  hosts: localhost

  vars:
    data:
     key1: 1
     key2: 2

  tasks:
    - name: Hello World debug
      debug:
        msg: "###ING###{{data}}###ING###"
        
   
   
   PLAY [Hello World] **************************************************************************************************

TASK [Gathering Facts] **********************************************************************************************
ok: [localhost]

TASK [Hello World debug] ********************************************************************************************
ok: [localhost] => {
    "msg": "###ING###{'key1': 1, 'key2': 2}###ING###"
}