How to pass parameters from entity using Service Node (alert subscription service)

I have an alert task it has a parameter called user_id or exp_report_id.

Using dialog task, I am scheduling alert using service node with alert subscription service. I have few entity nodes in dialog task which has user_id and exp_report_id.

How do I pass parameter values to alert parameters from these entities values in dialog tasks.

I tried {{context.entities.entUserID}} or context.entities.entUserID. It does not work.

Hi Team,

Can you please update on this?.

Thanks and Regards,
Sagar