[policy] [mock] Issue with special character

[brasseld]

If I put the following response content, I'm not able to retrieve all the content when invoking the gateway:

{
"ErrorCode":XXXXXXXX, "AccountInfo":{
"AccountID":XXXXXXXXXXXXXX,
"AccountStatus":1,
"Attributes":[{
"Name":" ​ $DematerializeBRA
​
", 
"Value":"1"
},{
"Name":" ​ $DematerializeTicket
​
",
"Value":"0"
}],

"Timestamp":"2016­06­30T12:08:56.235+01:00"
},
"Identifiers":[{
"Identifier":" ​ XXXXXXXXX ​ ",
"IdentifierType":0,
"IdentifierStatus":1
}]
}