Cannot parse JSON when trying to decode a JSON Table?

So I'm working on a game, and I'm using a JSON table in a StringValue, that passes through this code

function grabData(object)
    local dataTable
    if object:WaitForChild("Data",0.001) then
        local dataTable = game:GetService("HttpService"):JSONDecode(tostring(object.Data.Value))
    end
    if dataTable == nil then return nil else return dataTable end
end

and the JSON Table is

{"Destructable":true,"Health":20,"State":"Crate1","Holdable":true}

But I keep getting the can't parse JSON error