It is possible to collect additional metadata along with each event, such as payment amount or type when checkout is initiated or the transactionId, when checkout is completed.
To work with these more advanced features, I would recommend that you check out angulartics2, which can be found at https://www.npmjs.com/package/angulartics2. angulartics2 is a vendor-agnostic analytics library for Angular that can enable unique and granular event tracking needs using popular vendors, such as Google Tag Manager, Google Analytics, Adobe, Facebook, Baidu and more, as highlighted on the tool's homepage, shown here:
Angulartics2 ...
