amount is a number representing the amount of the activity.
The exact meaning of this property depends on the context in which the ActivityHistory interface is used.
date is a number representing the date of the activity.
It is expressed as a Unix timestamp.
level is a number representing the level of the activity.
The exact meaning of this property depends on the context in which the ActivityHistory interface is used.
ActivityHistoryis an interface representing the history of an activity. It includes the date of the activity, the amount of the activity, and the level of the activity.