def METHOD_NAME():
    query = """
        subscription{
          event{
            ...on ProductUpdated{
              product{
                id
                name
              }
            }
          }
        }
        """
    payload = [{"sensitive": "data"}]
    sensitive_fields = {"Product": {"name"}}
    anonymized = anonymize_event_payload(query, "any_type", payload, sensitive_fields)
    assert anonymized == MASK