definitions:

  VnfIndicatorSubscriptionRequest:
    description: >
      This type represents a subscription request related to VNF indicator value change notifications.
    type: object
    required:
      - callbackUri
    properties:
      filter:
        description: >
          Filter settings for this subscription, to define the subset of all notifications this
          subscription relates to. A particular notification is sent to the subscriber if the filter
          matches, or if there is no filter.
        $ref: 'VnfIndicatorNotificationsFilter_def.yaml#/definitions/VnfIndicatorNotificationsFilter'                  
      callbackUri:
        description: >
          The URI of the endpoint to send the notification to. 
        type: string
        format: URI
      authentication:
        description: >
          Authentication parameters to configure the use of Authorization when sending notifications corresponding
          to this subscription. This attribute shall only be present if the subscriber requires authorization of 
          notifications.
        $ref: "../../../definitions/SOL002SOL003_def.yaml#/definitions/SubscriptionAuthentication"