Podemos iniciar uma ação coletiva na Indonésia por um aplicativo fintech vazar dados de clientes?

I'll try to answer your questions:
As a lawyer in Indonesia, I will try to help you, but you must provide me with the following information:
1. Who are the names of the fintech customers?
2. What is the address or domicile of the fintech office?
Material Requirements:
Numerosity:
The number of group members is so large that it is inefficient to submit them individually.
Similarity :
There are similarities in fact/events, substantial legal basis, and types of claim between the representative and the group members.
Class Representative:
The class representative must be honest, sincere, and capable of representing the interess of the group.
If available, please contact me through the Lawzana platform.
Thank you.