Retrieve the details of a specific subscription by its ID.
api.hel.io/v1 and generate API keys there. For the development environment, use api.dev.hel.io/v1 and generate API keys from moonpay.dev.hel.io.Authentication using JWT token
The ID of the specific subscription. You can retrieve this ID using the /v1/subscriptions endpoint.
API key can be generated on helio dashboard settings page