$params  = wp_fusion()->crm->get_params(); // Get the authentication headers
    $request = 'https://api.hubapi.com/crm/v3/objects/contacts/search';

    $search = array(
        'filterGroups' => array(
            array(
                'filters' => array(
                    array(
                        'propertyName' => 'firstname',
                        'operator'     => 'EQ',
                        'value'        => 'Alice',
                    ),
                ),
            ),
        ),
    );

    $params['body'] = json_encode( $search );

    $response = wp_remote_post( $request, $params );

    if ( is_wp_error( $response ) ) {
        // handle error
    }

    $response = json_decode( wp_remote_retrieve_body( $response ) );

    // ^ The object containing the data