create_user_petstore_playground.swift

import UIKit
import PlaygroundSupport

let url = URL(string: "https://petstore.swagger.io/v2/user")!
var request = URLRequest(url: url)
request.addValue("application/json", forHTTPHeaderField: "Content-Type")
request.addValue("application/json", forHTTPHeaderField: "accept")
request.httpMethod = "POST"
request.httpBody = """
{
  "id": 0,
  "username": "string",
  "firstName": "string",
  "lastName": "string",
  "email": "string",
  "password": "string",
  "phone": "string",
  "userStatus": 0
}
""".data(using: .utf8)
URLSession.shared.dataTask(with: request) { (data, response, error) in
    print("\(String(data: data ?? Data(), encoding: .utf8)) - \(response) - \(error)")
}.resume()


PlaygroundPage.current.needsIndefiniteExecution = true