gistfile1.txt

$.ajax({
    url: "somefile.php"
}).done(function(result){
    firstArray = result.split('~');
    var secondArray = [];
    $.each(firstArray, function(index, value){
        secondArray[index] = decodeURIComponent(value);
        var secondArray2 = $.parseJSON(secondArray[index]);
        console.log(secondArray2.user);
    });
});