Extrinsic 16244-2

{
  "heartbeat": {
    "blockNumber": 16242,
    "sessionIndex": 270,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x088d7c07fd64cb68d3292297a2257618a0262b3de5daa6ea75404ae3e90a8672b6b0d9ffd495ae9497674e4b2f1cf1052f308c2407b9679da224a174142ab789"
}