How to Enable Authorization Header in Nginx?

Plugin page only shows the example of Apache server but I am using Nginx.

/wp-json/jwt-auth/v1/token Works

but

/wp-json/jwt-auth/v1/token/validate – Give me following error

{
    "code": "jwt_auth_no_auth_header",
    "message": "Authorization header not found.",
    "data": {
        "status": 403
    }
}