Extrinsic 31239-1

{
  "heartbeat": {
    "blockNumber": 31238,
    "sessionIndex": 520,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb48928cc495c4fc05f7ce73b7ba4a3e2ca1cbd294fa18ebcae09748e0f40c77120af406ce00535e45ea2c5c78f4c95ae1084f842df3f749fd029418861ce248b"
}