combinator: and # optional, default: and. Allowed values: and, or
not: false # optional, default: false
rules:
  - field: firstName
    operator: isNotNull
  - field: lastName
    operator: beginsWith
    value: A
  - combinator: or
    rules:
      - field: age
        operator: ">"
        value: 30
      - field: hobbies
        operator: contains
        value: music