Hi Dejan,

Please let me add a further consideration.

If the list of items is determined on the server side, another option that you might consider is to change the subscription mode from MERGE to COMMAND.
In particular with the "two-level push", please refer to this demo, the list of Items can also dynamically change while the subscription is active, and the key field of the COMMAND mode will automatically provide you with the name of each Item.

Regards,
Giuseppe