curl --request GET \
  --url https://api.hubapi.com/automation/v3/performance/workflow/{workflowId}

[
  {
    "series": "ENROLLED",
    "bucket": "2018-06-29",
    "frequency": 102
  },
  {
    "series": "ENROLLED",
    "bucket": "2018-06-28",
    "frequency": 8
  },
  {
    "series": "ENROLLED",
    "bucket": "2018-06-27",
    "frequency": 518
  },
  {
    "series": "UNENROLLED",
    "bucket": "2018-06-29",
    "frequency": 1
  },
  {
    "series": "COMPLETED",
    "bucket": "2018-06-29",
    "frequency": 101
  },
  {
    "series": "COMPLETED",
    "bucket": "2018-06-28",
    "frequency": 8
  },
  {
    "series": "COMPLETED",
    "bucket": "2018-06-27",
    "frequency": 518
  }
]