Extrinsic 55598-1

{
  "heartbeat": {
    "blockNumber": 55596,
    "sessionIndex": 926,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x847e4fc7157c7906b8d4171eeeed05f38af837e9c6efcd05cc06b2d999bd835620f975396642c1e664e11e786d3935238e4954cd028d54fb160d2add5b9c5280"
}