List Sessions

List workflow sessions in the revision.

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

Parameter	Type	Required	Description
`engine`	string	Yes	Must be `workflow_blobhub`.
`command`	string	Yes	Must be `list_sessions`.
`start_session_id`	string	No	Pagination cursor.

Parameter	Type	Description
`sessions`	array	List of session objects.
`last_session_id`	string	Cursor for next page.

{
  "engine": "workflow_blobhub",
  "command": "list_sessions"
}