Anyone know the format of the date_added field for bookmarks? Thanks!

Note: Bookmarks are stored in the Bookmarks folder in (XP - C:\Documents and Settings\{username}\Local Settings\Application Data\Google\Chrome\User Data\Default

Example Bookmark Entry:
{
   "date_added": "12886010121705000",
   "name": "PHP: file - Manual",
   "type": "url",
   "url": "http://us2.php.net/manual/en/function.file.php"
}