Howto: convert nim string encoding with Javascript

[gil26]

hi,

I have a nim string with a value compiled into this: 
    
    
    STRING_LITERAL(T_V45tF8B8NBcxFcjfe7lhBw_12, 
"\327\220\327\221\327\233=\327\222", 9);
    

Using GDB i get the exact same string ("\327\220\327\221327\233=\327\222") when 
querying the variable value.

My question is: how can i convert this value into meaningful utf8 string using 
Javascript?

Thanks