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

{
  "executions": [
    {
      "id": "<string>",
      "customer": "<string>",
      "to": "<string>",
      "sent_at": "<string>",
      "delivered_at": "<string>",
      "opened_at": "<string>"
    }
  ]
}