X-APP-ID: ********************
X-API-KEY: ********************
Authorization: ********************
curl --location --request POST 'https://api.conexteo.com/contacts/file' \ --header 'X-APP-ID: <api-key>' \ --header 'X-API-KEY: <api-key>' \ --form 'contactlist_id="1"' \ --form 'file=@""'
{ "success": true, "message": "contact(s) added" }