I do realize now that the back slash is a representation and its not coming when i am posting the data. .
Thanks for taking the time to contribute an answer. It’s because of helpful peers like yourself that we’re able to learn together as a community :)
Not able to figure out how i can get rid of '' character. I have tried few things but it didnt work out for me.
I think postgressql changes json string like that.
'\' character is getting added when executing in graphql