Is there a good way to support Subscriptions with apollo-server-lambda?

Hi everyone. I have a serverless application (SST/CDK) with mostly DynamoDB (single-table design) data source and I was quickly able to setup apollo-server-lambda and build out some Queries and Mutations, everything was going fine. However, I will also need Subscriptions, which apollo-server-lambda does not seem to support. (Or am I missing something?)

What is the recommended way of implementing Subscriptions in AWS serverless app using apollo-server-lambda?

Thank you!