To authenticate using the HTTP Basic method you need to provide Base64 encoded value of consumer_key:consumer_secret as HTTP header to the request you are sending.
This is example of how to create your Authentication with HTTP Basic Auth:
| Header Name | Header Value |
| Authorization | Bearer base64(consumer_key:consumer_secret) |
Note: base64() is common function that encodes string to Base64 format and exists on every platform.
If you don’t have consumer key and consumer secret, check the article: