解决Salesforce REST API错误

Question

I am working on a Laravel project that interacts with Salesforce. The app mainly creates user accounts, cases and updates an existing case with data collected from the users. During certain API calls, I am getting HTTP status code 400 and the response phrase simply says 'Bad Request'. I understand that a 'Bad Request' error happens when Salesforce fails to parse the data send via REST API. My question is, is there any way to debug these errors in a better way? Is there any by which I can get the exact field in the data sent to Salesforce which is causing the error?