curl --request POST \
  --url https://api.hubapi.com/automation/sequences/2026-03/enrollments \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "contactId": "<string>",
  "senderEmail": "<string>",
  "sequenceId": "<string>",
  "senderAliasAddress": "<string>"
}
'

{
  "enrolledAt": "2023-11-07T05:31:56Z",
  "id": "<string>",
  "toEmail": "<string>",
  "updatedAt": "2023-11-07T05:31:56Z"
}