Extrinsic 31514-1

{
  "heartbeat": {
    "blockNumber": 31513,
    "sessionIndex": 525,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0xc48dfba9d69ed96e201f08941e9c742ebc82c92c4305b0c45d678f2cb6ce685a2fa1bda1079a7e15449079c3c9a13a606972bab3cc2b99086a6e6472cade4481"
}