User journey

{
  "user_id": "string",
  "session_id": "string",
  "event": "LOGIN | OTP_VERIFY | PAYMENT_INIT | PAYMENT_COMPLETE | LOGOUT",
  "timestamp": "ISO 8601 datetime",
  "device_id": "string (optional)",
  "ip_address": "string (optional)",
  "metadata": {
    "amount": "number (optional)",
    "currency": "string (optional)"
  }
}

{
  "status": "Success",
  "data": {
    "status": "allow | block | review",
    "risk_score": 0.0-1.0,
    "reason": "string",
    "session_state": "string",
    "alert_triggered": boolean
  },
  "message": "success"
}

{
  "status": "success",
  "data": {
    "session_id": "string",
    "user_id": "string",
    "current_state": "string",
    "events": [...],
    "start_time": "ISO 8601 datetime"
  },
  "message": "success"
}

{
  "message": "Session cleared"
}

{
  "status": "success",
  "data": {
    "user_id": "string",
    "total_events": number,
    "average_risk_score": number,
    "blocked_events": number,
    "reviewed_events": number,
    "total_sessions": number,
    "average_session_risk": number
  },
  "message": "Success"
}

{
  "status": "healthy | degraded",
  "broker": "connected | disconnected",
  "database": "connected | disconnected",
  "timestamp": "ISO 8601 datetime"
}