List of available tokens for Journey Assigned Alert notification

Hello,

Our client wants to notify a certain group of people (via AoR) when a journey is assigned to a worker. I assumed we can do this by adding a new recipient to the 'Journey Assigned' notification in alerts composer. Does Oracle have a list of the available recipients for this alert? I am not an expert in creating expressions and it would help if there is a document for this.

Looking forward to some responses/ workarounds for this.