Extrinsic 74081-1

{
  "heartbeat": {
    "blockNumber": 74080,
    "sessionIndex": 1234,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x54e1b35606e99e3e970f9f1de5c044fabd312c17dc10e79dd49fcf1814443b67a97c9a333cdca3bd43ca2c7391f69f0712990a745beb4b0547fe2fe95dbdb28c"
}