I'm receiving some answers from an API and they are coming to me like this:
There's a way to handle with this since it is coming from the API? I've tried some encodingUtil methods, but I couldn't get the result I need.
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So, most likely the 3rd party system received input encoded in a way not directly translateable to UTF-8 and the third party system substituted the mis-encoded character using the UTF-8 � character that means unrecognized
It is a perfectly legitimate UTF-8 character and without some lexical analysis to guess at what the character should be (typically, a character with a diacritical mark), you are stuck with it.
example - do a replace of all