curl --request POST \
  --url https://api.pocketflows.com/businesses/{id}/sms_templates \
  --header 'Authorization: Basic <encoded-value>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "name": "<string>",
  "message": "<string>",
  "one_off": true,
  "image": "<unknown>",
  "shorten_urls": true,
  "image_uploads": [
    "<string>"
  ]
}
'

{
  "id": "<string>",
  "name": "<string>",
  "message": "<string>",
  "estimated_sms_segments": 123,
  "estimated_segments": {
    "sms": 123,
    "mms": 123
  },
  "image": "<string>",
  "shorten_urls": true
}