Variable containing a value of the ${SUBID} macro of your campaign's URL. More info at https://help.propellerads.com/en/articles/1954809-how-to-integrate-propellerads-s2s-conversion-tracking.
alex-feel/gtmctg-propellerads-visitor-id-variable
PropellerAds Visitor ID Variable for Google Tag Manager.
SmartyApache-2.0