swiftUI:how to insert data with Postgrest API

how to insert data with Postgrest API

I have get data from postgresql with postgrest API in switUI,

here is my code for "SELECT * FROM USER;":

import Foundation
import Combine
class UserList: ObservableObject {
    @Published var users: [User] = []
init() {
        load()
    }
func load() {
        let url = URL(string: "http://localhost:3000/user")!
        URLSession.shared.dataTask(with: url) { data, response, error in
            DispatchQueue.main.async {
                self.users = try! JSONDecoder().decode([User].self, from: data!)
            }
          }.resume()
       }
}
//struct User: Decodable, Identifiable {
struct User: Decodable {
    var id: Int
    var name: String
}