Data item contents.
Property-value pairs representing the data item's payload. When retrieving a data item, it also includes the following read-only fields:
- _id: Item ID.
- _createdDate: Date and time the item was added to the collection.
- _updatedDate: Date and time the item was last modified. When the item is first inserted, _createdDate and _updatedDate have the same value.
- _ownerId: ID of the user who created the item. Can be modified with site owner permissions.