Set aside dice mango coated in lemon juice and the mint sprigs for the topping. In a jar, combine all other ingredients and shake for about 10 seconds to loosen the chia seeds and psyllium husk. Shake well and pour into serving bowls. Before serving, set on the counter 20 minutes or chill 2 hours in the refrigerator or even overnight for a thicker consistency. Before serving, garnish with mango and mint sprigs.