var db = firebase.firestore();
function setVote(vals) {
    db
    .collection("polls")
    .doc("votes")
    .set(vals)
    .then(function(result) {
        alert(result);
    });
}
setVote({
    IPs: [
        { ip: "<?php echo $ip->address; ?>" }
    ],
    manzana: +2
});