Return format of the details calls

[ThomasCerq]

The following issue was posted on JIRA and I created a patch to solve the problem on the privacy proxy. Nevertheless, I think this problem should be solved on the Federated Recommender. Can someone fix it?

The response of the detail call I am getting, looks something like the following (see below). the "detail-property contains encoded JSON. This should be decoded before returning it to the caller.
{
"documentBadge": [
{
"id": "/04802/0C20B49D6C149705C27D255DC5666F27E46FE377",
"uri": "http://europeana.eu/resolve/record/04802/0C20B49D6C149705C27D255DC5666F27E46FE377",
"provider": "Europeana",
"detail": "{"eexcessProxy":{"edmlanguage":
{"xmlnsedm":"http://www.europeana.eu/schemas/edm<UrlBlockedError.aspx>/","content":"fr"}
,"dctitle":
{"content":1998,"xmlnsdc":"http://purl.org/dc/elements/1.1<UrlBlockedError.aspx>/"}
,"edmeuropeanaProxy":
{"xmlnsedm":"http://www.europeana.eu/schemas/edm<UrlBlockedError.aspx>/","content":false}
,"edmconcept":[
{"xmlnsedm":"http://www.europeana.eu/schemas/edm<UrlBlockedError.aspx>/","content":"film"}
,
{"xmlnsedm":"http://www.europeana.eu/schemas/edm<UrlBlockedError.aspx>/","content":"documentary film"}
],"xmlnseexcess":"http://eexcess.eu/schema<UrlBlockedError.aspx>/","dcidentifier":
{"content":"/04802/0C20B49D6C149705C27D255DC5666F27E46FE377file://///04802/0C20B49D6C149705C27D255DC5666F27E46FE377/","xmlnsdc":"http://purl.org/dc/elements/1.1<UrlBlockedError.aspx>/"}
}}"
}, .