I need help with a client project where they run a GPS tracker business for vehicles. They want to build a WhatsApp chatbot powered by ManyChat. The client has an Android app that allows their customers to access the GPS location of their vehicles.

I want to build the chatbot using ManyChat and integrate it with the Android app. Please guide me step-by-step on how to integrate the Android app with the WhatsApp chatbot powered by ManyChat.