Extrinsic 19096-1

{
  "heartbeat": {
    "blockNumber": 19094,
    "sessionIndex": 318,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xeaf57400e85081731513dfb75ab55cffa551ee449593368771ced62644ce6f51a6c5e57baa8b57ad70eb2c11dc61e7442b0c6ca25ed6c89a339eb31108ee4688"
}