Extrinsic 13471-1

{
  "heartbeat": {
    "blockNumber": 13470,
    "sessionIndex": 224,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb657d1ce390919816dc563e9113b31d440749c60caf4b8ac9ac5ca098ebb5c2719e871d789d6e31dbc9d38a2b7a5df8886f956526cd4a30ba03cc622916f8485"
}