Action Builder's API is not consistent about what key you need in your data for the name of the entity. For People (and other Entities configured like them) you need at least a given_name key. Other Entity types can be configured just to take a single name. These used to be insertable with the name key, but now seem to require action_builder:name. Rather than trying to force that prefix to be added, I'm just making sure all three keys pass the error handling in insert_entity_record().