Memberships url returns error code 400
http://metab.ucoin.io:9201/blockchain/memberships/6jtZDwCd3xZMhdVzK37FSY3NFPC5zsTxPv1TQN8LJUNt
Returns
HTTP/1.1 400 Bad Request
X-Powered-By: Express
Access-Control-Allow-Origin: *
Content-Type: application/json
Content-Length: 37
Etag: "735174911"
Date: Sat, 28 Nov 2015 16:53:30 GMT
Connection: keep-alive