Extrinsic 173863-1

{
  "heartbeat": {
    "blockNumber": 173862,
    "sessionIndex": 2897,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x0aee8d0ed808cfaf845689ef0fa9608e7e7afeb4bfec1a0091987163f67f5271dbcd5cd0884fe28b4aa10bc61891f4ce832652fb450252868c3137fc50d3778a"
}