curl --request GET \
  --url https://api.hubapi.com/crm/v3/lists/{listId}/memberships/join-order \
  --header 'Authorization: Bearer <token>'

{
  "total": 123,
  "paging": {
    "next": {
      "link": "",
      "after": ""
    },
    "prev": {
      "before": "",
      "link": ""
    }
  },
  "results": [
    {
      "recordId": "<string>",
      "membershipTimestamp": "2023-11-07T05:31:56Z"
    }
  ]
}