I can't get fetch body as plain string [Answered]

public async Task<JsonResult> GoogleSignin([FromBody] string googleToken)

public async Task<JsonResult> GoogleSignin([FromBody] string googleToken)

await fetch("/Auth/GoogleSignin", {
        method: 'POST',
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json'
        },
        body: response.credential
    })

await fetch("/Auth/GoogleSignin", {
        method: 'POST',
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json'
        },
        body: response.credential
    })