{
  "endpoints": {
    "/example/{id}": {
      "substitutions": {
        "id": "john.doe"
      }
    }
  },
  "configuration": {
    "control": {
      "url": "https://my-old-api.tld/api",
      "headers": {
        "Authorization": "old-auth"
      }
    },
    "candidate": {
      "url": "https://my-new-api.tld/api",
      "headers": {
        "Authorization": "new-auth"
      }
    }
  }
}