This is the payload that will be sent to the subscribed URL, when a changed to the amount of account credit for an account changes. This will trigger on both increases and decreases in account credit for the account.
Authenticate via HTTP Basic with your account username and API token. Examples use an explicit 'Authorization: Basic <base64(username:token)>' header; 'curl -u username:token' is equivalent. For sandbox, append "-test" to your username and use your sandbox token on api.dev.name.com.
HMAC signature for the request payload. See HMAC signing documentation for example code and detailed explanation of signing.
"djasfgafgflgsdfgdsfkhfhjas,12334782,1123-3423-4dss4-354"
The subscribed server accepted the request.