Task - This is the type of update.
UpdateRestrictions which is a change of price or restrictions.
UpdateDate is the change of day and happens daily
UpdateAvailability which is a change of availability
Received at - This is the UTC timestamp
Waiting Time - This is the time before the task was processed in milliseconds
Execution Time - This is the time the task took to process in milliseconds
is Success - Was the update a success of fail
View - Link to see details on each task
Here you will see some technical details and also the Json request