Extrinsic 175369-1

{
  "heartbeat": {
    "blockNumber": 175367,
    "sessionIndex": 2922,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xe60a1fac09b4fe48d918cc2740475ccddeb565322f6eb324b013c804c79efc257f4dc9d7f34e8892085ae6729171a819f5a44cedcbb747e771aac878003bd18e"
}