{
  "data": [
    {
      "id": "string",
      "phone": "string",
      "name": "string",
      "email": "string",
      "tags": [
        "string"
      ],
      "groups": [
        "string"
      ],
      "opted_in": true,
      "created_at": "2019-08-24T14:15:22Z"
    }
  ],
  "next_cursor": "string",
  "has_more": true
}

{
  "error": {
    "code": "string",
    "message": "string",
    "details": {
      "property1": null,
      "property2": null
    }
  }
}