I have to add signup/signin with google in the nextjs based web app. I have my own UI for login and backend is using managed service. I think I need to use

/signinup

endpoint of this(https://app.swaggerhub.com/apis/supertokens/FDI/1.10.3#/ThirdPartyEmailPassword%20Recipe). Can someone pls explain what is

redirectURI, code, clientId and authCodeResponse

in the request body?