Glenn Gillen

We've already done most of the heavy-lifting for turning a structure into JSON:

use serde::{Deserialize, Serialize};
use serde_json;

#[derive(Serialize, Deserialize)]
struct Person {
    first_name: String,
    last_name: String,
    age: u8,
}

fn main() {
    let first_name = String::from("Glenn");
    let last_name = String::from("Gillen");
    let age = 40;
    let p = Person{ first_name, last_name, age };
    let data = serde_json::to_string(&p).expect("Not a serializable type");
    println!("{}", data)
}

Instantiate an instance of our Person, parse it into the serde via calling to_string. Done.