en 1.8.8 /give Schilder

/give @p sign 1 0 {
    BlockEntityTag: {
        Text1: "{\"text\":\"FREE GOLD!\",\"color\":\"gold\",\"bold\":true,\"clickEvent\":{\"action\":\"run_command\",\"value\":\"/give @p Gold_Block\"}}"
    },
    display: {
        Name: "Custom Sign"
    }
}