[{"senderKeyId":1857373424,"senderChainKey":{"iteration":1,"seed":"ZgfM1Fp555T6FGDaRqzSKQoPlfkEUf3PiuESgZ0TPzg="},"senderSigningKey":{"public":"BTVdz//4ouS5iMM4QGGF9uVl2P828Vy6mbicU8WRsKUG"},"senderMessageKeys":[]}]