User Integration to Mailchimp lists

I’ve Set up the Events-Manager and i’m pretty happy with it. Now i’m looking for an integration with Mail-Chimp or some similar service. I’d like to have a Mail-List with the Integration of Event-Date, Event-Name, Event-Group for beeing able to so send some Custom follow-up E-Mails.
The only Add-On i’ve found for Mailchimp does just support to Add the Users to the list without adding additional Fields like Event-Name etc.

Is there an existing Plugin for enabling Custom Follow-Up E-Mails?

Or can someone give me a Hint how to add other Fields to this Code:

		$em_data = $this->get_data();
		if( empty( $em_data['user_email'] ) ) {
			return false;
		}

		$data = array(
			'EMAIL' => $em_data['user_email'],
			'NAME' => $em_data['user_name'],
		);

Kindly regards
Dave

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