I found a way to do it, I have to iterate over the filter object to create a new object with the [] in the name :
var query = {};
for (var i in filters) {
query['filters['+i+']'] = filters[i];
}
Restangular.one('myList').get(query);
Produce:
&filters%5Bnickname%5D=test
Someone have better solution ?