Extrinsic 26734-1

{
  "heartbeat": {
    "blockNumber": 26732,
    "sessionIndex": 445,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x4c05ae49853608f2e1432e06968aa6226d092408edf2071121e289a050c7a4763621816b2654e6aa5fcc85740e8be9d23b7ff9537cde982681f4783ca1e9c283"
}