first_name:
  '#title': 'First name'
  '#type': textfield
  '#required': true
last_name:
  '#title': 'Last name'
  '#type': textfield
  '#required': true
email:
  '#title': Email
  '#type': email
  '#required': true
subject:
  '#title': Subject
  '#type': textfield
  '#required': true
message:
  '#title': Message
  '#type': textarea
  '#required': true
confirmation_number:
  '#title': 'Confirmation number'
  '#type': value
  '#value': '[webform:handler:remote_post:completed:confirmation_number]'
