POST /api/token HTTP/1.1
Cache-Control: no-cache
Accept: */*
Host: localhost:5000
accept-encoding: gzip, deflate
Connection: keep-alive
content-length: 39
Content-Type: application/json
Postman-Token: df07baa6-e84a-acde-07c9-ee57a5f94059

{username: "mario", password: "secret"}