curl --request GET \
  --url https://studio-api.onlytraffic.com/api/external/v1/accounts/{username}/promo-texts \
  --header 'X-API-Key: <api-key>'

{
  "success": true,
  "data": [
    {
      "id": 123,
      "text": "Subscribe now and get 30% off the first month."
    }
  ]
}