import json
import requests
from requests.auth import HTTPBasicAuth

base_url = "https://photoai.lotlinx.com"
username = "testaccount8"
password = "79b41e211568"

def RequestToken():
    endpoint = base_url + "/images/optimize"
    session = requests.Session()
    session.auth = (username, password)
    data = [{
    "dealerID": 54345,
    "vehicles": [{"id": 65, "images": [{"imageId": 43, "imageUrl": "https://img.lotlinx.com/vdn/7416/jeep_wrangler%20unlimited_2014_1C4BJWFG3EL326863_7416_5_339187295.jpg"}]}]
    }]
    resp = session.post(url=endpoint, data=data)
    return resp

r = RequestToken()
print(r.json())