Update Session

Update a session’s attributes.

POST `/revisions/:id/data` (Command: `update_session`)

Parameter	Type	Required	Description
`engine`	string	Yes	Must be `workflow_blobhub`.
`command`	string	Yes	Must be `update_session`.
`session_id`	string	Yes	The ID of the session.

Returns an empty JSON object upon success.

{
  "engine": "workflow_blobhub",
  "command": "update_session",
  "session_id": "sess_001"
}