List audiences

{
  "success": true,
  "data": [
    {
      "id": "string",
      "name": "string",
      "contact_count": 0,
      "created_at": "2019-08-24T14:15:22Z"
    }
  ],
  "limit": 0,
  "skip": 0,
  "total": 0
}

{
  "success": false,
  "error": {
    "code": "string",
    "message": "string",
    "request_id": "string",
    "details": [
      {
        "path": "string",
        "code": "string",
        "message": "string"
      }
    ]
  }
}