POST /updates/tips HTTP/1.1
    Host: alto.example.com
    Accept: text/event-stream,application/alto-error+json
    Content-Type: application/alto-updatestreamparams+json
    Content-Length: 76

    {
      "add": {
        "tips-123": { "resource-id": "update-my-cost-tips" }
      }
    }