How to Retrieve Requests from Business Rules Called from the Batch API

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I am thinking of acquiring the request information of the calling API in the business rule and dividing the processing conditions according to the request content, but I am in trouble because I cannot get the request.
How do I get the request information?

[fj0886bi]

Postscript
Running the following from within a business rule using gs.action failed to retrieve anything except the URI.

I want to get the body information of the request posted from batchAPI.
https://developer.servicenow.com/dev.do#!/reference/api/washingtondc/rest/batch-api