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" If I have double quotes inside the HTML, they need to be escaped as ". Wait, the instruction says "Use single quotes ' for HTML attributes" - this likely refers to the attribute syntax within the HTML string. So `

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` would be correct (using angle brackets), not `<h2>` style. And for attribute values, I should use single quotes: `...`. But wait - the entire content_html is a JSON string value. So I need to escape backslashes and double quotes. If I use single quotes for attributes, I don't need to escape them differently in JSON - JSON strings use double quotes to delimit, so single quotes inside are fine. Example valid JSON: { "content_html": "

Hello world

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