curl --request POST \
  --url https://api.tryarchitect.com/v0/page_groups/{page_group_id}/pages/{page_id}/versions \
  --header 'Content-Type: application/json' \
  --data '{
  "operationKey": "<string>"
}'

{
  "createdAt": "<string>",
  "id": "<string>",
  "status": "pending",
  "versionNumber": 123
}