Extrinsic 25718-1

{
  "heartbeat": {
    "blockNumber": 25716,
    "sessionIndex": 428,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x42e8eb056c65c262af6733c8d6a853e6e687372692013f8b6d50ea4eba0ab52f8d2a037cb9504bff00172ded10ba96004c6e82757f2a3e8ffc54c06a4f89c384"
}