Adding Private data to Node

Hi I want to store extra information for each node is it possible to add like below? The thought is that we put the meta tag on any node/json-block (or any node that has a “content” property).


if you want to store additional data it would have to be in an attribute (it looks like you are already doing that). What other properties does the ‘private’ date have?

If it has to stay outside other users’ hands probably an external data structure with a mapping to the node id will do the trick.

Best regards