Problem with Post ajax and Javascript Object

I have the following problem, I have a constructor function that will mount an object for me:

var companyConstructor = function Company(id, logo, name, language, primaryColor, secondaryColor, description, headOffice, serverInfo, serverAddress, publicUrl) {

    if (false === (this instanceof Company)) {
        return new Company();
    }

    this.id = id;
    this.logo = logo;
    this.name = name;
    this.language = language;
    this.primaryColor = primaryColor;
    this.secondaryColor = secondaryColor;
    this.description = description;
    this.headOffice = headOffice;
    this.serverInfo = serverInfo;
    this.serverAddress = serverAddress;
    this.publicUrl = publicUrl;
    this.users = [];
};

And I also have a method in prototype of this function that adds users to the object:

companyConstructor.prototype.add = function (data) {

    var o = {
        id: data.Id,
        name: data.Name,
        email: data.Email                        
    };

    return this.users.push(o);
};

Then I create an instance of this object and in the course of the screen I fill this object:

var company = new companyConstructor();

$.ajax({
    url: '/api/company/',
    dataType: 'json',
    type: 'POST',                
    data: company,
    success: function (data) {                    

    },
    error: function (xhr) {
        console.log(xhr.status);
    }
}); 

Because the add function is inherited I did not think it would be triggered in the post, I think something is wrong, someone could explain it to me.