facts.json

{
  "fa": {
    "ansible_purefa_facts": {
      "volumes": {
        "PoC-VM_Volumes": {
          "bandwidth": null,
          "hosts": [
            [
              "VM-003-IOM",
              1
            ]
          ],
          "serial": "1079E7C9294245FA000117CF",
          "size": 1099511627776,
          "source": null
        },
        "test1": {
          "bandwidth": null,
          "hosts": [
            [
              "VM-003-IOM",
              11
            ]
          ],
          "serial": "1079E7C9294245FA000117E0",
          "size": 1073741824,
          "source": null
        }
      }
    },
    "changed": false,
    "invocation": {
      "module_args": {
        "gather_subset": [
          "volumes"
        ]
      }
    }
  }
}

playbook.yml

---
- hosts: localhost
  gather_facts: false
  vars_files:
    - facts.json
  tasks:
    - debug:
        msg: "{{ item.value.serial }}"
      when: item.key == "test1"
      with_dict: "{{ fa.ansible_purefa_facts.volumes }}"
      loop_control:
        label: "{{ item.key }}"