Please draw and explain the architecture of the voting system made with Mina Protocol's ZKAPP.
  Mina Protocol's ZKAPP (Zero-Knowledge Succinct Non-Interactive Argument of Knowledge) is a privacy-preserving protocol that enables the creation of a voting system that is secure, private, and efficient. Here's an architecture of a voting system built using ZKAPP:

1. User Interface:
The user interface is the part of the system that users interact with. It can be a web application, a mobile app, or a physical kiosk. The user interface is responsible for handling user authentication, casting votes, and displaying election results.
2. Frontend:
The frontend is the client-side application that interacts with the user interface. It is responsible for handling user input, sending requests to the backend, and displaying the results. The frontend can be built using any web framework, such as React, Angular, or Vue.
3. Backend:
The backend is the server-side application that interacts with the ZKAPP network. It is responsible for handling the following tasks:

a. User Authentication: The backend authenticates users using a secure authentication mechanism, such as OAuth or JWT.

b. Vote Casting: The backend receives vote casting requests from users and encrypts them using ZKAPP's privacy-preserving encryption scheme.

c. Vote Verification: The backend verifies the integrity of
Here is a high-level architecture diagram of a voting system built using Mina Protocol's ZK-App:
```
                                      +---------------+
                                      |  User's Device  |
                                      +---------------+
                                             |
                                             |
                                             v
                                      +---------------+
                                      |  ZK-App Client  |
                                      |  (Web/ Mobile)  |
                                      +---------------+
                                             |
                                             |
                                             v
                                      +---------------+
                                      |  Mina Node     |
                                      |  (Verifier)     |
                                      +---------------+
                                             |
                                             |
                                             v
                                      +---------------+
                                      |  ZK-SNARKs     |
                                      |  (Prover)      |
                                      +---------------+
                                             |
                                             |
                                             v
                                      +---------------+
                                      |  Blockchain    |
                                      |  (Mina Protocol)|
                                      +---------------+
                                             |
                                             |
                                             v
                                      +---------------+
                                      |  Voting Contract|
                                      |  (Smart Contract)|
                                      +---------------+
```
Here's a breakdown of each component and how they interact:

1. **User's Device**: The user interacts with the voting system through a web or mobile application.
2. **ZK-App Client**: The client-side application generates a zero-knowledge proof (ZKP) using the user's input (e.g., vote) and a set of public parameters. The ZKP is used to prove that the user's input satisfies certain conditions (e.g., the user is eligible to