{
  "projectId": "My Google Cloud Project",
  "traceId": "6ef9eae4acda422912f705b69539cec8",
  "spans": [
    {
      "spanId": "13616474711799465301",
      "kind": "RPC_CLIENT",
      "name": "/endpoint",
      "startTime": "2015-09-03T16:40:00.841654024Z",
      "endTime": "2015-09-03T16:40:00.856599389Z",
      "labels": {
        "key1": "value1",
        "key2": "value2"
      }
    },
    {
      "spanId": "1006609995974696303",
      "kind": "RPC_SERVER",
      "name": "/action1",
      "startTime": "2015-09-03T16:40:00.842880028Z",
      "endTime": "2015-09-03T16:40:00.851729538Z",
      "parentSpanId": "13616474711799465301",
      "labels": {
        "key1": "testing",
        "key2": "more testing"
      }
    },
    {
      "spanId": "8529136369770133851",
      "kind": "RPC_SERVER",
      "name": "/action2",
      "startTime": "2015-09-03T16:40:00.852484163Z",
      "endTime": "2015-09-03T16:40:00.853738268Z",
      "parentSpanId": "13616474711799465301",
      "labels": {
      }
    },
    {
      "spanId": "323284134707432301",
      "kind": "RPC_SERVER",
      "name": "/action3",
      "startTime": "2015-09-03T16:40:00.854112894Z",
      "endTime": "2015-09-03T16:40:00.855115940Z",
      "parentSpanId": "13616474711799465301",
      "labels": {
      }
    }
  ]
}