Request subscription cancellation or undo a scheduled cancellation

curl -X POST "https://example.com/v1/workplace/billing/commands" \
  -H "Content-Type: application/json" \
  -d '{
    "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
    "expectedRevision": "01b5419f-7ce1-4016-a16c-802ea2b68a5e",
    "action": "cancel"
  }'

{
  "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
  "action": "cancel",
  "state": "pending",
  "requestedAt": "2019-08-24T14:15:22Z"
}