Extrinsic 13904-1

{
  "heartbeat": {
    "blockNumber": 13902,
    "sessionIndex": 231,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xd207cd0e3ff9a444e394bfd1a023afa8a3103b52c16f7809c09516c6e34d5e74cdbee62131243117a1ba2511871905a71bb7a846a3a5cb93c4490b42e6b25387"
}