Learning Management System Usage Funnel Tracking

Develop a Node.js microservice that tracks and analyzes user interactions within an educational platform's digital learning funnel. Implement event tracking using Mixpanel or Segment to capture granular user actions like course enrollment, lecture completion, quiz participation, and certification. Create advanced analytics that calculate conversion rates between each learning stage, identify drop-off points, and generate recommendations for curriculum optimization. The solution should support real-time analytics and be capable of processing high-volume event streams.