Internal
Contains information about a webhook subscription, such as the board ID associated with the webhook subscription, the date and time when the webhook subscription was last updated, and the type of board item that the subscription is associated with.
Optional
Unique identifier (ID) of the board with which the webhook subscription is associated.
Contains information about a webhook subscription, such as the board ID associated with the webhook subscription, the date and time when the webhook subscription was last updated, and the type of board item that the subscription is associated with.