{"message":"KG Inicis Payment API","version":"1.0.0","endpoints":{"GET /health":"Health check","POST /api/kg-incis/payment-window":"Create KG Inicis payment window","POST /api/kg-incis/payment-signature":"Generate payment signature","GET /api/kg-incis/cache-stats":"Get signature cache statistics","POST /api/kg-incis/update-financial-data":"Update invoice recipient with financial data"}}