{"keys":
       [
          {"kty": "oct",
           "kid": "018c0ae5-4d9b-471b-bfd6-eef314bc7037",
           "use": "sig",
           "alg": "HS256",
           "k": "hJtXIZ2uSN5kbQfbtTNWbpdmhkV8FJG-Onbc6mxCcYg"
          },
          {"kty": "oct",
           "kid": "1e571774-2e08-40da-8308-e8d68773842d",
           "use": "enc",
           "alg": "A256GCM",
           "k": "AAPapAv4LbFbiVawEjagUBluYqN5rhna-8nuldDvOx8"
          }
       ]
     }