如何使用golang + jason从命名的json获取数据？

I've this json:

info = {"key1": 1 , "key2": 1 , "key3": 3}

I would like to get the value from key1 with jason and NewObjectFromReader.

I'm using this code:

statusBody, err := jason.NewObjectFromReader(res.Body)
if err != nil {
    log.Fatal(err)
}

res.Body is a io.Reader, so that part is fine (I guess). go run shows this problem:

2018/12/19 18:02:40 invalid character 'i' looking for beginning of value

I think the problem is that the json starts with info= instead of {. Any idea how to parse this json?.

info = is not valid JSON. Therefore, you have to start reading where the { begins and stop reading with the final closing }.