Get history of spend backs by user token

This GET endpoint is used to retrieve the history of spendbacks for a specific user token.
You can use this endpoint to help manage your payment operations and track the usage of funds by your users.
To use this endpoint, you need to provide the user_token as a parameter in the URL Path.
The endpoint will then return a list of all the historical spendbacks for the provided user token. The response will contain a JSON array with details for each spendback transaction.