NSJSONSerialization
code::
NSString* jsonPath = @"/Users/nishio/Dropbox/lacaille.json";
NSData *data = NSData dataWithContentsOfFile:jsonPath;
NSError *error = nil;
id json = [NSJSONSerialization JSONObjectWithData:data
options:kNilOptions
error:&error];
https://gyazo.com/2e10fc31dfcbda29626d139d326dd975
ObjectiveC
JSON