Extrinsic 12523-1

{
  "heartbeat": {
    "blockNumber": 12522,
    "sessionIndex": 208,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xb83b6ac1eceb20f7ef600980f190381393a46e850198f94cd754252b002ab10b652b831a027b306c4be73f60dfc40fa204730ad286a92a9533eba906fa114482"
}