This endpoint deletes existing subscription
NOTE: Consider all IDs as abstract strings, without making any assumptions about their format or relying on such assumptions. There is a non-zero probability that IDs may change in the future, and this should not result in any breaking changes.
Basic authentication header of the form Basic <encoded-value>, where <encoded-value> is the base64-encoded string username:password.
ID of the subscription
Successful subscription deletion with no content