Extrinsic 53435-1

{
  "heartbeat": {
    "blockNumber": 53434,
    "sessionIndex": 890,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xac2cc2c2aece8cefc166d09199afde68673aa0cd4fbf33238544b2aa3598e84e3fe4beb7f9e70e23b56d31435c153df111817393dbaf617ba358f8326843b483"
}