Deep POST params parsing does not work properly with numeric indices:
> (simple_bridge_request_wrapper:new ([], [], [], [], [], [])):parse_deep_post_params ([{"x[3]","x3:val"}], []).
[{"x",[2,1,0,"x3:val"]}]
...but if we make the index an alphanumeric word, it starts to behave as expected:
> (simple_bridge_request_wrapper:new ([], [], [], [], [], [])):parse_deep_post_params ([{"x[i3]","x3:val"}], []).
[{"x",[{"i3","x3:val"}]}]