POST /cdnifci/filtered HTTP/1.1
  Host: alto.example.com
  Accept: application/alto-cdni+json
  Content-Type: application/cdnifilter+json
  Content-Length: 176

  {
    "cdni-capabilities": [
      {
        "capability-type": "FCI.DeliveryProtocol",
        "capability-value": {
          "delivery-protocols": [ "https/1.1" ]
        }
      }
    ]
  }

  HTTP/1.1 200 OK
  Content-Length: 570
  Content-Type: application/alto-cdni+json

  {
    "meta": {
      "vtag": {
        "resource-id": "my-filtered-cdnifci",
        "tag": "da65eca2eb7a10ce8b059740b0b2e3f8eb1d4785"
      }
    },
    "cdni-advertisement": {
      "capabilities-with-footprints": [
        {
          "capability-type": "FCI.DeliveryProtocol",
          "capability-value": {
            "delivery-protocols": [
              "https/1.1",
              "http/1.1"
            ]
          },
          "footprints": [
            {
              "footprint-type": "ipv4cidr",
              "footprint-value": [ "198.51.100.0/24" ]
            }
          ]
        }
      ]
    }
  }