curl --location --request POST '//api.postmarkapp.com//templates' \
--header 'X-Postmark-Server-Token;' \
--header 'Content-Type: application/json' \
--data-raw '{
"Alias": "string",
"HtmlBody": "string",
"Name": "string",
"Subject": "string",
"TextBody": "string"
}'
{
"Active": true,
"Alias": "string",
"Name": "string",
"TemplateId": 0
}