function my_format_post_date( $post_data ) {

    if ( isset( $post_data['contact_id'] ) ) {
        return $post_data;
    }

    $payload = json_decode( file_get_contents( 'php://input' ) );

    if ( is_object( $payload ) && isset( $payload->id ) ) {
        $post_data['contact_id'] = $payload->id;
    }

    return $post_data;

}

add_filter( 'wpf_crm_post_data', 'my_format_post_data' );