Extrinsic 55886-1

{
  "heartbeat": {
    "blockNumber": 55884,
    "sessionIndex": 931,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0xf0be13cb553dec168332d4f1df8a06baada77f23d187b4fb5a03cca6ad47482a28cc43e5c3ed6e62d9afe50711474918b1522bf883f56a1c99df5f5aadbc6580"
}