curl --request PUT \
  --url https://api.revong.com/api/v1/mail/templates/{messageTemplateId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "version": 123,
  "name": "<string>",
  "category": "<string>",
  "desc": "<string>",
  "subject": "<string>",
  "body": "<string>"
}
'