newsletter_presto

var settings = {
  "async": true,
  "crossDomain": true,
  "url": "https://presto.funilpromkt.com.br/api/contacts/new",
  "method": "POST",
  "headers": {
    "cookie": "4530f58287b9bad3cb854c94993242e6=4eb6c1d2e28683a1da8059c597f31efd",
    "content-type": "application/json",
    "authorization": "Basic YWRtaW46cHJvQDEzNQ=="
  },
  "processData": false,
  "data": "{\n\"firstname\": \"Nome Newsletter\",\n\"email\": \"email@email.com\",\n\"state\" : \"Santa Catarina\",\n\"mensagem\" : \"Texto da mensagem\"\n}"
}

$.ajax(settings).done(function (response) {
  console.log(response);
});