Extrinsic 6315-1

{
  "heartbeat": {
    "blockNumber": 6313,
    "sessionIndex": 105,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xa6a9025d2010bcd2d45c243a6a0ee5980bb79c3debffc050941b98c46490273547bf48512600644758dce1d62ef28d07b825cf4755992778cf086b6e2b42648d"
}