<?php

function update_member_in_mhrsc( $user_id, $infusionsoft_contact_id ) {

    $mhrsc_member_id = get_user_meta( $user_id, 'mhrsc_member_id', true );

    $user = get_userdata( $user_id );

    $data = array(
        'id'            => $mhrsc_member_id
        'first_name'    => $user->first_name,
        'last_name'     => $user->last_name,
        'email'         => $user->user_email,
    );

    $params = array(
        'headers'     => array(
            'Api-Key'   => get_transient( 'transient_name' )
        ),
        'body'  => json_encode( $data )
    );


    $result = wp_remote_post( 'https://apiurl.com/', $params );

}

add_action( 'wpf_pushed_user_meta', 'update_member_in_mhrsc', 10, 2 );