List Customers

{
  "results": [
    {
      "id": "3c90c3cc-0d44-4b50-8888-8dd25736052a",
      "name": "<string>",
      "handle": "<string>",
      "mandates": [
        {
          "handle": "<string>"
        }
      ]
    }
  ],
  "nextOffset": "<string>",
  "hasMore": true
}