@SergiyB Are you open to other solutions than the Spoke? I wrote this step-by-step guide on how to sync Jira Service Management to ServiceNow with Unito's 2-way integration. It enables 2-way sync between records in ServiceNow and issues/tickets in Jira (Software, Service Management or Data Center). 

You can achieve something similar to this:

With a field mapping table that looks like this:

Here's some of our ServiceNow documentation from Unito's Knowledge Base and you can find details about our security and compliance policies here.

Feel free to reach out with any questions!