Reading json file with gson package

I have the following json as my input:

{
"info":
{
"test2":{"key1":"val1","key2":"val2","key3":"val3"},
"test0":{"key1":"val1","key2":"val2","key3":"val3"},
"test1":{"key1":"val1","key2":"val2","key3":"val3"}
}
}

I believe the following class is compatible with the above json file:

public class ProfessionAuthor {
    public Map<String, Map<String, String>> info = new HashMap<String, Map<String, String>>();
}

I read the json file with the following command:

Gson gson = new Gson(); 
Profession profession = gson.fromJson(reader, Profession.class);

But I get the the following error. Any idea?

jsonreader Expected a name but was BEGIN_OBJECT at