public function add_contact_to_list( $list, $email, $action_data ) {

		if ( empty( $email ) ) {
			throw new \Exception( __( 'Email is missing', 'uncanny-automator' ) );
		}

		if ( empty( $list ) ) {
			throw new \Exception( __( 'List is missing', 'uncanny-automator' ) );
		}

		$params = array(
			'action' => 'add_contact_to_list',
			'email'  => $email,
			'list'   => $list,
		);

		$response = $this->api_request( $params, $action_data );

		// If the email was already in the list
		if ( ! empty( $response['data']['discarded'] ) ) {
			throw new \Exception( __( 'Contact with such email address was already in the list', 'uncanny-automator' ) );
		}

		// If the email was not found in contacts
		if ( ! empty( $response['data']['invalidEmails'] ) ) {
			throw new \Exception( __( 'Contact with such email address was not found', 'uncanny-automator' ) );
		}

		return $response;
	}