Chilean Swiss Roll with Dulce De Leche

Name: Chilean Swiss Roll with Dulce De Leche
Cuisine: American, Latin American
Ingredients: 4 large eggs (room temperature); 100 g (½ cup) granulated sugar; 1 tsp vanilla extract; 80 g (⅔ cup) all-purpose flour; 1 tsp baking powder; Pinch of salt; 300 g (1 ¼ cups) dulce de leche (manjar); 50 g (⅓ cup) chopped walnuts or shredded coconut (optional); Powdered sugar for dusting; Additional dulce de leche or whipped cream (optional)