curl --request GET \
  --url https://api.sandbox.bango.com/catalogs/products/{productId} \
  --header 'Authorization: Basic <encoded-value>'

const options = {method: 'GET', headers: {Authorization: 'Basic <encoded-value>'}};

fetch('https://api.sandbox.bango.com/catalogs/products/{productId}', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

import requests

url = "https://api.sandbox.bango.com/catalogs/products/{productId}"

headers = {"Authorization": "Basic <encoded-value>"}

response = requests.get(url, headers=headers)

print(response.text)