Update managed API timeout (#321)

diff --git a/conf.d/managed_endpoints.conf b/conf.d/managed_endpoints.conf
index 49a1e13..09613cc 100644
--- a/conf.d/managed_endpoints.conf
+++ b/conf.d/managed_endpoints.conf
@@ -71,6 +71,8 @@
         set $responseHeaders '';
         set $responseBody '';
 
+        proxy_read_timeout 70s;
+
         access_by_lua_block {
             local routing = require "routing"
             local ds = require "lib/dataStore"