def METHOD_NAME(self) -> None:
    now = 1470174257070
    json = {"key": "value"}
    self.get_success(self.store.store_device("user", "device", None))
    self.get_success(self.store.set_e2e_device_keys("user", "device", now, json))
    res = self.get_success(
        self.store.get_e2e_device_keys_for_cs_api((("user", "device"),))
    )
    self.assertIn("user", res)
    self.assertIn("device", res["user"])
    dev = res["user"]["device"]
    self.assertLessEqual(json.items(), dev.items())