swarm-payload v1
cipher: aes-256-ctr
key: HMAC-SHA256(seed, "swarm-p2-key-v1") (32 bytes)
iv: c44850160ab20c2e5bc7cae8ce51378f
data:
RXbXkMPg/rCGAVI6K1oBR6E1ML0FEJj5UQ9/xyvo1FeSQwSGXEUayvcYlbDlUNNuE7c440VNZYq5Z/83FVwQw6ky4gMINFSk1Yb2hyh5a5+uflnEz68RBzBFAAPuXGz5UtdYQfQC6GkXwjC9WsEgr4kYLjzt0Zml2UwsRijk6P/m24Q+