This can be 0 if less than an hour has been played on this day.
timestamp
timestamp:number
The timestamp of this activity.
Remarks
Internally, this timestamp is only accurate to the day (hours, minutes etc. are zeroed out)
because the data this gets generated from is in the ISO 8601 format as per python's Datetime#isoformat method
which only provides the day, month and year of this activity.
Represents a player activity entry.