WebhookTracking

Allowlisted attribution subset of the contact's and conversation's custom_fields (utm_* keys, click IDs such as gclid/gbraid/wbraid/fbclid/msclkid/ttclid/ctwa_clid, and ad referral fields ad_/referral_). Conversation values win over contact values (last touch over first touch). Present only when at least one field was captured; other custom field keys are never forwarded.

{
    "utm_source": "google",
    "utm_medium": "cpc",
    "utm_campaign": "black-friday",
    "gclid": "Cj0KCQjw_pKzBhDMARIsAML..."
}