Extrinsic 74888-1

{
  "heartbeat": {
    "blockNumber": 74887,
    "sessionIndex": 1248,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6ae58891d47c41ccd73427986959f3c2bef5ae0501b15c4e544609132f97ed11c5ce6b62602421d4fbd506a9f56e96155fc58561318e2193aa61879b548aeb89"
}