Extrinsic 25487-1

{
  "heartbeat": {
    "blockNumber": 25486,
    "sessionIndex": 424,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x7c92691c6ffd6d5abb8f2d8bb070e96ef221ade758b7ba02229a5b0e8ba507515fe26744679c345755b19cb48d620260a0acca96f29a699118fc3e3cadec0789"
}