Fetch variables

curl --request GET \
  --url https://api.dittowords.com/v1/variables \
  --header 'Authorization: <api-key>'

{
  "user_name": {
    "example": "Jessica",
    "fallback": "Ditto user"
  },
  "user_age": {
    "example": 24,
    "fallback": 0
  },
  "help_link": {
    "text": "Get help",
    "url": "https://help.com"
  }
}