Вернуть строку JSON обычным способом

Таким образом, вы получите объект

let myStr = "{\n  \"Name\": \"Next steps for pathway activities\",\n  \"Options\": [\n    {\n      \"Name\": \"Show next steps\",\n      \"ActionType\": \"PathSelector\",\n      \"Key\": \"otoscopy\",\n      \"Group\": \"pathway-activities\"\n    },\n    {\n      \"Name\": \"Treatment cannot continue\",\n      \"ActionType\": \"Navigation\",\n      \"Key\": \"treatment\",\n      \"Group\": \"pathway-activities\"\n    },\n    {\n      \"Name\": \"Refer to GP\",\n      \"ActionType\": \"PathSelector\",\n      \"Key\": \"refer_to_gp\",\n      \"Group\": \"treatment\"\n    },\n    {\n      \"Name\": \"New Wax appointment\",\n      \"ActionType\": \"PathSelector\",\n      \"Key\": \"new_wax_appointment_otoscopy\",\n      \"Group\": \"treatment\"\n    },\n    {\n      \"Name\": \"Continue treatment\",\n      \"ActionType\": \"Navigation\",\n      \"Key\": \"pathway-activities\",\n      \"Group\": \"treatment\"\n    }\n  ]\n}";

let myObj = JSON.parse(myStr);

console.info(myObj);

Вывод будет:

    "Name": "Next steps for pathway activities",
    "Options": [
        {
            "Name": "Show next steps",
            "ActionType": "PathSelector",
            "Key": "otoscopy",
            "Group": "pathway-activities"
        },
        {
            "Name": "Treatment cannot continue",
            "ActionType": "Navigation",
            "Key": "treatment",
            "Group": "pathway-activities"
        },
        {
            "Name": "Refer to GP",
            "ActionType": "PathSelector",
            "Key": "refer_to_gp",
            "Group": "treatment"
        },
        {
            "Name": "New Wax appointment",
            "ActionType": "PathSelector",
            "Key": "new_wax_appointment_otoscopy",
            "Group": "treatment"
        },
        {
            "Name": "Continue treatment",
            "ActionType": "Navigation",
            "Key": "pathway-activities",
            "Group": "treatment"
        }
    ]
}

Вы можете сделать так, возьмите строку json

var myStr = "{\n  \"Name\": \"Next steps for pathway activities\",\n  \"Options\": [\n    {\n      \"Name\": \"Show next steps\",\n      \"ActionType\": \"PathSelector\",\n      \"Key\": \"otoscopy\",\n      \"Group\": \"pathway-activities\"\n    },\n    {\n      \"Name\": \"Treatment cannot continue\",\n      \"ActionType\": \"Navigation\",\n      \"Key\": \"treatment\",\n      \"Group\": \"pathway-activities\"\n    },\n    {\n      \"Name\": \"Refer to GP\",\n      \"ActionType\": \"PathSelector\",\n      \"Key\": \"refer_to_gp\",\n      \"Group\": \"treatment\"\n    },\n    {\n      \"Name\": \"New Wax appointment\",\n      \"ActionType\": \"PathSelector\",\n      \"Key\": \"new_wax_appointment_otoscopy\",\n      \"Group\": \"treatment\"\n    },\n    {\n      \"Name\": \"Continue treatment\",\n      \"ActionType\": \"Navigation\",\n      \"Key\": \"pathway-activities\",\n      \"Group\": \"treatment\"\n    }\n  ]\n}";

var _obj = JSON.parse(myStr);

console.info(_obj);

Вывод в образе

Если вы хотите иметь объект и выполнять операции над этим объектом в будущем, вы можете использовать пакет NuGet Newtonsoft.Json.

Просто создайте классы, которые отражают ваш json следующим образом:

class MyObject
{
    public string Name { get; set; }
    public IEnumerable<Option> Options { get; set; }

}

class Option
{
    public string Name { get; set; }
    public string ActionType { get; set; }
    public string Key { get; set; }
    public string Group { get; set; }
}

И попробуйте десериализовать этот json:

var obj = JsonConvert.DeserializeObject<MyObject>(jsonStr);