United StatesWebsiteNov 30, 2025

Transforming Subscription-Based Fitness Tracking with Dynamic eCommerce Intelligence

New York Sports Clubs (NYSC), operated by New TSI Holdings, Inc., is one of the most recognized fitness chains in the U.S. With dozens of club locations, digital signups, and free pass options, it drives thousands of user journeys daily through its Microsoft ASP.NET-based platform yet faced a major problem

We didn’t retrofit, we reverse-built a modern eCommerce tracking model on top of a non-eCommerce tech stack.

Revenue Value in GA4/Meta

+60%

eCommerce Event Coverage

100%

The Problem
Despite their scale and spend across 4+ paid channels (Google, Meta, etc.), NYSC had no eCommerce event tracking:

❌ No way to optimize or build remarketing based on user behavior

❌ No dataLayer present

❌ No GA4 Enhanced eCommerce events

❌ No revenue value captured anywhere

❌ Forms built on 50+ HubSpot instances with no event logic

Our Solution
We engineered a custom dynamic tracking framework — solving for both tech stack constraints and marketing requirements.

🔧 Key Implementations
Custom Dynamic DataLayer (GA4-Compliant)
Built from scratch across non-CMS ASP.NET pages
Injected dataLayer.push() for every eCommerce interaction:
View Item
Add to Cart
Begin Checkout
Purchase
Plan Select (mapped as custom event)
Location Selection

All values structured into GA4 item-scoped schema
Passed product/plan ID, pricing, category, and club details dynamically
Fully compatible with Meta Pixel and Google Ads via sGTM passthrough

GA4 Enhanced eCommerce Setup
Built all GA4 tags + event triggers for subscription flow:
“Join Now”
“Free Pass”
3-Step Checkout Flow → Mapped to GA4 funnel
Reconstructed virtual cart logic for non-standard subscriptions

HubSpot Form Tracking Framework
Centralized form submission tracking across 50+ forms
One dynamic event: form_submission with form name & ID auto-attached
Enables:
Audience segmentation by form purpose
Ad retargeting by lead type
GA4 + Meta CAPI conversion consistency

Custom Interaction Tracking
Club Filter/Selection (club-g search)
Plan Toggle Clicks
CTA Funnel Pathing
All enriched via custom JavaScript pushing:
User intent
Location
Device context
Funnel stage (via hidden field mapping)

Transforming Subscription-Based Fitness Tracking with Dynamic eCommerce Intelligence
Tools & Stack Used
✓ GA4 (Web) with item-scoped dimensions

✓ GTM (Web)

✓ Meta Pixel + Meta CAPI (via sGTM passthrough)

✓ Custom JavaScript + Tag Injection in ASP.NET

✓ HubSpot Forms (Auto-tagging via trigger mapping)

✓ Server-Side GTM via Cloud Run (forwarded signals)

✓ Enhanced Form & Checkout Event Design


Why It Worked
We didn’t retrofit, we reverse-built a modern eCommerce tracking model on top of a non-eCommerce tech stack.
We were stuck with no visibility. Now we understand exactly who’s converting, what they want, and how to grow.
— NYSC Stakeholder (Marketing)
Have a non-standard site and no revenue data?
We can architect platform-ready tracking from scratch even if you don’t use Shopify, Magento, or GA-native stacks.

Book Your Free Signal Blueprint Call


Bonus Highlight: Custom eCommerce Funnel in Looker Studio

Visualizing the Subscription Journey From Click to Club Signup

We went beyond tracking — we engineered a real-time, source-mapped conversion funnel using:

No plugins or 3rd-party dashboard builders
GA4 data streams (enhanced eCommerce + custom events)
Custom funnel logic in Looker Studio

Outcomes

GA4 Enhanced eCommerce Setup

HubSpot Form Tracking Framework

Custom Interaction Tracking

Custom Dynamic DataLayer

Need support?

Let’s turn these outcomes into your next sprint.

We help teams ship clean telemetry, honest attribution, and growth experiments that actually move revenue.