Extrinsic 28240-1

{
  "heartbeat": {
    "blockNumber": 28238,
    "sessionIndex": 470,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x1ac7d0dafd15f4f09ced685ab6b664ebaa3bdcdc22c4970f04091aca3e855a3024e70291efb290b3488d92ce7a0949193463c0344645c4291f70751fee28e389"
}