Extrinsic 31541-1

{
  "heartbeat": {
    "blockNumber": 31540,
    "sessionIndex": 525,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xfe974fd98bd20272772024229b3136454ec2910208ff24b80933de2af8833a6856a86a0ff6838b56d14b6a887e326d21ee8b676c64185248a80c3b1d9c19fc8f"
}