Tracking changes to SFDC variables via API
I'm trying to track changes to four specific SFDC fields via the Marketo API: sfdcLeadId, sfdcAccountId, sfdcContactId and sfdcType, but am not having any luck. My first approach was to tap into the leadchanges.json endpoint and focus on Change Data Value activity type, but it doesn't look like these field changes are logged there. Does anyone know if they're logged elsewhere that I can tap into via the API?