JSON-RPC Viewer is an extension to help viewing JSON-RPC requests in a more convenient way than Network tab allows. You can view a list of requests with method name, params and result/response. Supports JSON-RPC batch requests from version 1.1.1
Feature requests, bug reports and pull requests are welcome here: https://github.com/kityan/json-rpc-viewer.
You can install it from Chrome Web Store: https://chrome.google.com/webstore/detail/json-rpc-viewer/hnmcofcmhpllkdkncnofkjdlpieagngg.