FCM Notifications by Topic for Statewise Users

I have a Flutter application with a Python backend. The goal is to dynamically assign Firebase Cloud Messaging (FCM) topics to users based on their state of residence. Users will only be subscribed to FCM topics if their profiles include a registered state; otherwise, they will be unsubscribed. Additionally, the project involves implementing a daily automated schedule to send notifications to users through FCM topics assigned to them in the backend.