{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "title": "Authenticate",
  "$id": "#authentication/authenticate",
  "type": "object",
  "properties": {
    "username": { "type": "string" },
    "password": { "type": "string" }
  },
  "required": ["username", "password"],
  "additionalProperties": false
}