curl --request GET \
  --url https://api.coralogix.com/mgmt/openapi/4/dataplans/data-usage/v2/spans/count \
  --header 'Authorization: <api-key>'

{
  "spansCount": [
    {
      "errorSpanCount": "10",
      "lowErrorSpanCount": "5",
      "lowSuccessSpanCount": "50",
      "mediumErrorSpanCount": "20",
      "mediumSuccessSpanCount": "200",
      "successSpanCount": "100",
      "timestamp": "2021-01-01T00:00:00.000Z"
    }
  ]
}