I am looking for a straightforward way to export results from functions like ImageContents, FacialFeatures, and WolframAlpha - symbols that return stuff containing knowledgebase content.
Aside from obvious non-JSON-exportable things like Missing[], Complex, None, etc. exporting Quantities and Entities look like the main hurdle.
Is there a standard way to replace them with common name strings and strip uuids so that they are jsonifiable as well as understandable to the non-wolfram world?