Zapier importing images from Contentful

I am attempting to automate posts from our Contentful CMS to Pinterest. Contentful is connecting to Zapier just fine, and I can draw the most-recently edited post, but Contentful doesn’t seem to be returning any image URLs. Here’s a look at data from a sample:

fields__heroImage__en-US__sys__type: Link
fields__heroImage__en-US__sys__linkType: Asset
fields__heroImage__en-US__sys__id: 1K80DstJyQanu3gZ1nqTG4

Not super useful. Any suggestions?