PUT /api-l/admin/workspaces/child

curl --request PUT \
  --url http://localhost:3001/api-l/admin/workspaces/child \
  --header 'Content-Type: application/json' \
  --data '{
  "name": "<string>",
  "workspaceId": "<string>",
  "externalId": "<string>",
  "domain": "<string>"
}'

{
  "id": "<string>",
  "name": "<string>",
  "externalId": "<string>",
  "type": "Root",
  "writeKey": "<string>",
  "domain": "<string>",
  "status": "Active"
}