How to remove the values in the json payload

can you guide how to remove this spi: in json response

Hi @sura95 welcome to the forum.

Edit: Looking again with fresh eyes, I don't think this is the right answer.

You can use a change node:

This might be the case of a new user trap - do you REALLY need to remove them?

PS, as @jbudd says, use a change node but to get the actual path (without typos) use the tools provided (hint "Copy Path"):

There’s a great page in the docs (Working with messages : Node-RED) that will explain how to use the debug panel to find the right path/value for any data item.

Pay particular attention to the part about the buttons that appear under your mouse pointer when you over hover a debug message property in the sidebar.