Extrinsic 55702-1

{
  "heartbeat": {
    "blockNumber": 55700,
    "sessionIndex": 928,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x8c997d191dc52cd3508d587cb534dd32d13c846752f7f071196d863fcf5fe337f1957c4dec99633466821b2abeb4345d359c6fbcc4e5b51d2e660d4118273c8b"
}