How to create new users with JWT Auth Plugin?

I'm trying to build an application using ReactJS and Wordpress Rest Api. I'm using JWT Auth Plugin and it works great but if I try to create a new user without being logged I get this error below:

{
  success: false,
  statusCode: 403,
  code: jwt_auth_no_auth_header,
  message: Authorization header not found.,
  data: []
}

I understand that I need a token to make POST requests but if it's a new user that is trying to register on my application, how can I generate a token for a user that doesn't exist yet?

Here is the code of my user_post.php:

?php 

function api_user_post($request){

    $email = sanitize_email($request['email']);
    $senha = $request['senha'];
    $nome = sanitize_text_field($request['nome']);
    $user_exists = username_exists($email);
    $email_exists = email_exists($email);


    if(!$user_exists  !$email_exists  $email  $senha) {
        $user_id = wp_create_user($email, $senha, $email);
        
        $response = array(
            'ID' = $user_id,
            'display_name' = $nome,
            'first_name' = $nome,
            'role' =  'professor'
        );

        wp_update_user($response);   
        

    }else{
        $response = new WP_Error('email', 'Email já cadastrado.', array('status' = 403) );
    }
    return rest_ensure_response($response);
}

function resgister_api_user_post(){
    register_rest_route('api', '/usuario', array(
        array(
            'methods' = WP_REST_Server::CREATABLE,
            'callback' = 'api_user_post',
        ),
    ));
}

add_action('rest_api_init', 'resgister_api_user_post');

?