"full_name": "{$contact.first} {$contact.last}",
"address_1": "{$contact.geo_mailing.street_address}",
"address_2": "{$contact.geo_mailing.street_address2}",
"city": "{$contact.geo_mailing.city}",
"state": "{$contact.geo_mailing.state}",
"postal_code": "{$contact.geo_mailing.postal_code}"
"campaign_id": "XXXXX-insert unique campaign ID-XXXXX",
"creative_id": "XXXXX-insert unique creative ID (optional)-XXXXX"