how to have data validation when the object is sent by jquery and the page is not strong typed

Question

I have a form in modal form , which gets data from user and the make an Object in Jquery and pass it to controller

  <div class="modal-body" id="myModalBody">
          <div class="row form-group">
              <div class="col-6 d-inline-block">
                  <label>Province</label>
                  <select name="Province" asp-items="@ViewBag.Province" id="ddlProvinces" class="form-control"></select>
              @Html.ValidationMessage("ddlProvinces","Select Province")
              </div>
              <div class="col-6 d-inline-block">
                   <label>City</label>
                   <select id="ddlCities" class="form-control"></select>
                  @Html.ValidationMessage("ddlCities","Select City")
              </div>
         </div>
         <div class="row form-group">
             <div class="col-12 d-inline-block">
                <label>Address</label>
                <input type="text" id="address" class="form-control" value="" />
              @Html.ValidationMessage("number","Enter Number")
            </div>
        </div>                  
   </div>
    <div class="modal-footer">
        <button type="button" id="save" class="btn btn-primary">Save</button>
    </div>  

this is juquery

     $('#save').click(function () {
        var postData = {
            ProvinceId: $('#ddlProvinces').val().trim(),
            CityId: $('#ddlCities').val().trim(),
            Province: $('#ddlProvinces option:selected').text(),
            City: $('#ddlCities option:selected').text(),
            Address: $('#address').val().trim()
        }          

         $.ajax({
            type: "POST",
            url: '/cart/SaveAddress',
             data: postData,
            success: function (data) {
                if (data) {  
                    $('#myModal').modal('hide');
                }
            }                
        })
    })

is it possible to add data annotation to this form to check the model validity?I mean when the page is not strong typed and is not binded to a model like (@model userAddress). if yes would you please edit the code to see how it is?