{
  ...,
  "heap": [
    {
      "name": "ClientHandler",
      "type": "ClientHandler"
    },
    {
      "name": "mySecretsProvider",
      "type": "Base64EncodedSecretStore",
      "config": {
        "secrets": {
          "password.secret.id": "cGFzc3dvcmQ="
        }
      }
    }
  ],
  "metricsProtectionFilter": {
    "type": "ScriptableFilter",
    "config": {
      "type": "application/x-groovy",
      "file": "BasicAuthResourceServerFilter.groovy",
      "args": {
        "realm": "/",
        "username": "myUsername",
        "passwordSecretId": "password.secret.id",
        "secretsProvider": "${heap['mySecretsProvider']}"
      }
    }
  },
  ...
}