Parse JSON with Pure JS Return Value

I have the following JSON:
{
"searchResults": [{
"self": "https://api.xxx.com/customers/xxxx/applicantworkflows/689997",
"id": 689997
},
{
"self": "https://api.xxx.com/customers/xxxx/applicantworkflows/691005",
"id": 691005
}
]
}

I need to parse the JSON and return a value that is always 2nd in the array.... In this example, I need "691005".

I need this in PURE JS no libraries and I need this today!