Hi @technical1,
There's no way to send an empty request body with Prismic. We have another user who deployed a Next.js app on Digital Ocean App Platform and added an API endpoint in their app to receive the webhook, format it, and forward the request to Digital Ocean. That could be an option.
It's not likely we'd consider removing the request body, since it includes a lot of important information about the content changes. However, if you think it would be a useful feature, I could submit a feature request to make it an option in the webhooks settings.
Sam