curl --request POST \
  --url https://your-instance.example.com/api/user/sms-templates/{templateId} \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "phoneNumber": "<string>",
  "selectedUser": {
    "channelType": "<string>",
    "messengerId": "<string>"
  }
}
'

{}