How to track form submission in GTM?

Question

Google Analytics

The essence of the task is to listen to the submission of the subscription form and pass this event to Google Analytics as a goal through gtm.
And everything would be easy and great if this form would be ordinary.
But technically, this is a subscription form, not a form , and I can’t understand how such a form can be passed to gtm.

<div class="ulp-content" style="transform: translate(0px, 0px) scale(1);">
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-355" data-left="0" data-top="15" data-appearance="fade-in" data-appearance-speed="1000" data-appearance-delay="0" data-scrollbar="off" data-confirmation="off" style="left: 0px; top: 15px;"></div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-356" data-left="0" data-top="15" data-appearance="fade-in" data-appearance-speed="1000" data-appearance-delay="0" data-scrollbar="off" data-confirmation="off" style="left: 0px; top: 15px;"></div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-363" data-left="85" data-top="285" data-appearance="slide-up" data-appearance-speed="1000" data-appearance-delay="1000" data-scrollbar="off" data-confirmation="off" style="left: 85px; top: 285px;"><i class="fa fa-lock"></i> Мы не рассылаем Спам и не передаем третим лицам ваши данные.</div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-357" data-left="15" data-top="35" data-appearance="slide-down" data-appearance-speed="1000" data-appearance-delay="200" data-scrollbar="off" data-confirmation="off" style="left: 15px; top: 35px;">Ваш убойный заголовок</div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-359" data-left="15" data-top="155" data-appearance="slide-down" data-appearance-speed="1000" data-appearance-delay="200" data-scrollbar="off" data-confirmation="off" style="left: 15px; top: 155px;">Описание</div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-358" data-left="15" data-top="135" data-appearance="slide-right" data-appearance-speed="1000" data-appearance-delay="300" data-scrollbar="off" data-confirmation="off" style="left: 15px; top: 135px;"></div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-364" data-left="350" data-top="45" data-appearance="slide-down" data-appearance-speed="1000" data-appearance-delay="200" data-scrollbar="off" data-confirmation="off" style="left: 350px; top: 45px;">Заполните форму и нажмите кнопку (Ваш продукт)</div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-362" data-left="350" data-top="220" data-appearance="slide-up" data-appearance-speed="1000" data-appearance-delay="900" data-scrollbar="off" data-confirmation="off" style="left: 350px; top: 220px;"><a href="#" class="ulp-submit ulp-inherited" onclick="return ulp_subscribe(this);" data-label="Отправить" data-loading="Отправляю...">Отправить</a></div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-361" data-left="350" data-top="170" data-appearance="slide-left" data-appearance-speed="1000" data-appearance-delay="800" data-scrollbar="off" data-confirmation="off" style="left: 350px; top: 170px;"><input class="ulp-input ulp-input-field" type="email" name="ulp-email" placeholder="Введите Свой E-mail..." value="" onfocus="jQuery(this).removeClass('ulp-input-error');" data-tamboo-input-id="2"></div>
                <div class="ulp-layer" id="ulp-inline-layer-9T191d96aD3OKCSG-360" data-left="350" data-top="120" data-appearance="slide-right" data-appearance-speed="1000" data-appearance-delay="700" data-scrollbar="off" data-confirmation="off" style="left: 350px; top: 120px;"><input class="ulp-input ulp-input-field" type="text" name="ulp-name" placeholder="Введите Имя..." value="" onfocus="jQuery(this).removeClass('ulp-input-error');" data-tamboo-input-id="3"></div>
              </div>

link to the page with the test form - https://abdunovrezvan.com/testfoma/

Answer 1

Hello!
I suspect that it is problematic to change the form or hang a json handler so that, if successful, it sends data to the dataLayer.
It remains to listen to all ajax requests and send them to the dataLayer, and send the required request to the analytics as an event, and then it’s clear.
Here is an example from Lunametrics:
https://www.lunametrics.com/blog/2015/08/27/ajax-e...
PS
This is not the final solution, but a tip for those who read the comment and add the code. I don't have time, unfortunately.