Extrinsic 48872-1

{
  "heartbeat": {
    "blockNumber": 48870,
    "sessionIndex": 814,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xc872b0b4d5a7cf221b12c43461004be4b3c6922066f047097b7906495a2a2a62f39cac570105e4712c2a8be85b7f5ea3b79c65f66cc643bca5743af2e6ff918c"
}