Public Base64 example: encode harmless data only

A Base64 string can be decoded by anyone. For a forum example, replace real tokens, account identifiers, and private documents with harmless sample text before encoding. State the source text and encoding so readers can reproduce the result. If your issue concerns Unicode or newlines, include a synthetic example that preserves those exact features. Do not paste a real secret and assume the encoded form hides it. The example should demonstrate the transformation without exposing the original system.