+
+${extract json{IDs}{ \{"IDs": \{"1":116, "2":943, "3":234\}\} }}
+expect: {"1":116, "2":943, "3":234}
+
+${extract json{IDs}{ \{"id": \{"a":101, "b":102\}, "IDs": \{"1":116, "2":943, "3":234\}\} }}
+expect: {"1":116, "2":943, "3":234}
+
+<${extract json{nonexistent}{ \{"id": \{"a":101, "b":102\}, "IDs": \{"1":116, "2":943, "3":234\}\} }}>
+expect: <>
+