curl --request GET \
  --url https://api.hubapi.com/email/public/v1/subscriptions/timeline

import requests

url = "https://api.hubapi.com/email/public/v1/subscriptions/timeline"

response = requests.get(url)

print(response.text)

const options = {method: 'GET'};

fetch('https://api.hubapi.com/email/public/v1/subscriptions/timeline', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.hubapi.com/email/public/v1/subscriptions/timeline",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.hubapi.com/email/public/v1/subscriptions/timeline"

	req, _ := http.NewRequest("GET", url, nil)

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.hubapi.com/email/public/v1/subscriptions/timeline")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.hubapi.com/email/public/v1/subscriptions/timeline")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)

response = http.request(request)
puts response.read_body

{
  "hasMore": true,
  "offset": "CK_PuKu3KBXr8LqG",
  "timeline": [
    {
      "timestamp": 1401975207000,
      "portalId": 62515,
      "recipient": "6d4b537e-c5ac-11e3-a673-00262df65d03@some.email.com",
      "changes": [
        {
          "change": "BOUNCED",
          "source": "SOURCE_NON_DELIVERY_REPORT",
          "portalId": 62515,
          "changeType": "PORTAL_BOUNCE",
          "causedByEvent": {
            "id": "6d72d39c-87da-3ced-bfdf-5f0213363827",
            "created": 1401975207000
          }
        }
      ]
    },
    {
      "timestamp": 1400255007763,
      "portalId": 62515,
      "recipient": "tim@opas.com",
      "changes": [
        {
          "change": "SUBSCRIBED",
          "source": "SOURCE_RECIPIENT",
          "portalId": 62515,
          "subscriptionId": 2849,
          "changeType": "SUBSCRIPTION_STATUS",
          "causedByEvent": {
            "id": "0d813e2c-ce7f-4510-9250-839cd08c967a",
            "created": 1400255007763
          }
        },
        {
          "change": "SUBSCRIBED",
          "source": "SOURCE_RECIPIENT",
          "portalId": 62515,
          "subscriptionId": 230318,
          "changeType": "SUBSCRIPTION_STATUS",
          "causedByEvent": {
            "id": "0d813e2c-ce7f-4510-9250-839cd08c967a",
            "created": 1400255007763
          }
        },
        {
          "change": "SUBSCRIBED",
          "source": "SOURCE_RECIPIENT",
          "portalId": 62515,
          "changeType": "PORTAL_STATUS",
          "causedByEvent": {
            "id": "0d813e2c-ce7f-4510-9250-839cd08c967a",
            "created": 1400255007763
          }
        }
      ]
    },
    {
      "timestamp": 1399053958000,
      "portalId": 62515,
      "recipient": "testemail+535fe913a51ff@emailtest.com",
      "changes": [
        {
          "change": "BOUNCED",
          "source": "SOURCE_NON_DELIVERY_REPORT",
          "portalId": 62515,
          "changeType": "PORTAL_BOUNCE",
          "causedByEvent": {
            "id": "cf568063-f12f-3a94-9c02-faccdc5f9bad",
            "created": 1399053958000
          }
        }
      ]
    }
  ]
}

{
  "status": "<string>",
  "message": "<string>",
  "correlationId": "<string>"
}