[{"senderKeyId":1273704498,"senderChainKey":{"iteration":1,"seed":"xXxVob4eu7VCl5E9ZMZMjJNXcabhdU/HvLdrLVKjkms="},"senderSigningKey":{"public":"BYcWp2HTWLKtqw6aGDHzeCkeR51/zRq7q4BBa6E811o0"},"senderMessageKeys":[]}]