curl --request GET \
  --url https://api.pocketflows.com/campaigns/{id}/executions \
  --header 'Authorization: Basic <encoded-value>'

{
  "executions": [
    {
      "id": "<string>",
      "customer": "<string>",
      "scheduled_at": "<string>",
      "step_count": 123,
      "current_step_id": "<string>",
      "status": "pending",
      "failed_at": "<string>",
      "failed_reason": "<string>",
      "finished_at": "<string>",
      "finished_reason": "<string>",
      "stopped_at": "<string>"
    }
  ]
}