<p>How would you represent <b><i>mixed content</i></b> in JSON?</p>
or:
`{paragraphs: [{spans: [{ text: "How you represent "}, {bold: true, italic: true, text: "mixed content"},{text: " in JSON?"}]}`
I'll fully grant, I don't want to write a document by hand in either of the JSON formats I suggested. Although, given the choice, I'd rather receive it in that format to be parsed than in any XML format.
["p", "How would you represent ", ["b", ["i", "mixed content"]], " in JSON?"]