Public JSON validation example: use synthetic values

To ask about a JSON validation error publicly, reduce the document to a harmless minimal object that still fails. Keep the relevant quotes, escapes, commas, nesting, or duplicate key. Show the exact error and expected behavior, and state whether you are checking syntax or a separate schema. Remove API keys, personal data, and internal URLs before posting. A small valid or invalid example lets others diagnose the rule without accessing production data.