The act of forming a personal connection with someone/something (object) unidirectionally/asymmetrically to get updates pushed to.<p>Related actions:</p><ul><li><a href="http://schema.org/FollowAction">FollowAction</a>: Unlike FollowAction, SubscribeAction implies that the subscriber acts as a passive agent being constantly/actively pushed for updates.</li><li><a href="http://schema.org/RegisterAction">RegisterAction</a>: Unlike RegisterAction, SubscribeAction implies that the agent is interested in continuing receiving updates from the object.</li><li><a href="http://schema.org/JoinAction">JoinAction</a>: Unlike JoinAction, SubscribeAction implies that the agent is interested in continuing receiving updates from the object</li></ul>.