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.