Badly Formatted REST Request Returns Stack-trace

POST /rest/webResources/1.0/resources
Content-Type= application/json

{"c":[],"r":["5","xc":["_super","main","atl.general","login"],"xr":"confluence.web.resources:login"]}

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><status><status-code>500</status-code><message>Unexpected character (':' (code 58)): was expecting comma to separate ARRAY entries
 at [Source: org.apache.catalina.connector.CoyoteInputStream@45aa7a14; line: 1, column: 23]</message><stack-trace>org.codehaus.jackson.JsonParseException: Unexpected character (':' (code 58)): was expecting comma to separate ARRAY entries
 at [Source: org.apache.catalina.connector.CoyoteInputStream@45aa7a14; line: 1, column: 23]
	at org.codehaus.jackson.JsonParser._constructError(JsonParser.java:1433)
	at org.codehaus.jackson.impl.JsonParserMinimalBase._reportError(JsonParserMinimalBase.java:521)
	at org.codehaus.jackson.impl.JsonParserMinimalBase._reportUnexpectedChar(JsonParserMinimalBase.java:442)
	at org.codehaus.jackson.impl.Utf8StreamParser.nextToken(Utf8StreamParser.java:482)
	at org.codehaus.jackson.map.deser.std.StringCollectionDeserializer.deserialize(StringCollectionDeserializer.java:164)
	at org.codehaus.jackson.map.deser.std.StringCollectionDeserializer.deserialize(StringCollectionDeserializer.java:146)
	at org.codehaus.jackson.map.deser.std.StringCollectionDeserializer.deserialize(StringCollectionDeserializer.java:18)
	at org.codehaus.jackson.map.deser.SettableBeanProperty.deserialize(SettableBeanProperty.java:299)
	at org.codehaus.jackson.map.deser.SettableBeanProperty$FieldProperty.deserializeAndSet(SettableBeanProperty.java:579)

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