post https://api.dengage.com/rest/contents/sms
CreateSmsContent API call is used to create a new SMS Content under the given folderId.
If the folderId is not specified, the system creates the content under the default SMS Content folder.
This API allows creating content in multiple languages to send messages to recipients in their preferred language. Each language variant must include a message and sender ID.
For MMS content, you can include media URLs, but the account must have the MMS feature enabled and the sender must support MMS.
The API returns the content UUID after successful execution, otherwise it returns the relevant error code.