How get ID User

Solution: https://github.com/Tmeister/wp-api-jwt-auth/issues/153

in /plugins/jwt-authentication-for-wp-rest-api/class-jwt-auth-public.php

        $data = array(
            'token' => $token,
            'user_email' => $user->data->user_email,
            'user_nicename' => $user->data->user_nicename,
            'user_display_name' => $user->data->display_name,
            //add this
            'user_id' => $user->data->ID,
        );

Update

In functions.php to hold the user_id, avatar, role

function jwt_auth_function($data, $user) { 
	$data['user_role'] = $user->roles; 
	$data['user_id'] = $user->ID; 
	$data['avatar']= get_avatar_url($user->ID);
	return $data; 
} 
	add_filter( 'jwt_auth_token_before_dispatch', 'jwt_auth_function', 10, 2 );