Extrinsic 187543-1

{
  "heartbeat": {
    "blockNumber": 187542,
    "sessionIndex": 3125,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x660565970ebcba86928a4f89d71a964293616127359ab73dd879e0bd108fe54254e15aa5b3d1554c063750fb79f7bc024822d3ef16da56bb33ee0ae30b4b4f8a"
}