Extrinsic 24503-1

{
  "heartbeat": {
    "blockNumber": 24501,
    "sessionIndex": 408,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x3e8328d2ea96786b93c1602ff4707e4df9f92c7ea40bcca6e100074b68832335973256fd8d1562d3021ed833683e337f923f589b7dab329c1617590801305488"
}