Extrinsic 25404-1

{
  "heartbeat": {
    "blockNumber": 25403,
    "sessionIndex": 423,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x3aaf92ea4265837d2a8adcda3b67eb12f95c29c259fd93965e673b01b7fe623883ae6f66f2e575ebb12ad34f861288a926f46518854ead3b237b3c0cfa064882"
}