Destiny.Definitions.Milestones.DestinyMilestoneChallengeActivityDefinition

Type: object
Object Properties
activityHash
The activity for which this challenge is active.
Type: uint32
activityGraphNodes
If the activity and its challenge is visible on any of these nodes, it will be returned.
Type: array
phases
Phases related to this activity, if there are any.

These will be listed in the order in which they will appear in the actual activity.
Type: array