Best practices for testing voice-over API integrations?

I’m currently integrating Genny API into our automated content pipeline. One issue we’ve faced is managing the massive amount of metadata for different voice profiles during testing. We started tracking our test data management roi and realized that manual data prep was our biggest bottleneck. Using a hub like testomat.io to orchestrate our test cases helped us cut the integration time by half. Has anyone else found a good way to manage large audio-related datasets for automated QA?"