Cognigy webhook payload mapping for CXone Dynamic Routing

Trying to pass Cognigy intent data to a CXone Dynamic Routing webhook. The POST hits /api/v2/routing/users/{userId}/wrapup-codes but returns 400. The payload is missing the required interactionId.

{"intent": "billing", "confidence": 0.9}

How do I map the Cognigy session ID to the CXone interaction ID in the before the REST call?