{
  "auth": {
    "config": {
      "password": "YourPass",
      "user": "YourUsername"
    },
    "type": "basic_auth"
  },
  "body": "file://some.jsonnet",
  "header": {
    "Content-Type": "application/json"
  },
  "method": "POST",
  "url": "https://example.com/email"
}