How do I insert a json string through the json tools?

[laojianzi]

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1. Is this request related to a challenge you're experiencing? Tell me about your story.

I would like to be able to submit user input to an http node

e.g. curl --location 'xxx' --header 'Content-Type: application/json' --data-raw '{"content": "user input"}'

2. Additional context or comments

my test

However, input in json format is output as an object
Since the expected parameter type is a string, the server will not be able to parse the parameter

[laojianzi]

Supported in #7138