Inserting a non-ascii character into Firebase

Directory structure

pom.xml
src/main/java/com/firebase/repro/Main.java

Main.java

package com.firebase.repro;

import com.firebase.client.Firebase;

public class Main {
    public static void main(String[] args) throws InterruptedException {
        Firebase firebaseRef = new Firebase("https://test-firebase-please-ignore.firebaseio.com/");
        firebaseRef.child("testplace").setValue("é");
        Thread.sleep(10000);
    }
}

pom.xml

<project>
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.firebase.repro</groupId>
    <artifactId>my-app</artifactId>
    <version>1</version>

    <dependencies>
        <dependency>
            <groupId>com.firebase</groupId>
            <artifactId>firebase-client-android</artifactId>
            <version>[2.0.0,)</version>
        </dependency>
    </dependencies>
</project>