Multiplier value applied to reward earnings (e.g. 2 = double rewards)
Defines how the multiplier is activated (e.g. user activated or automatic).
Duration for which the user activated multiplier remains active after activation, in ISO 8601 format.
UTC timestamp when the multiplier becomes available. The timestamp should not be in the past.
UTC timestamp when the multiplier expires and stops being available. The timestamp should not be in the past.
List of reward item UUIDs that the multiplier applies to.