Extrinsic 26775-1

{
  "heartbeat": {
    "blockNumber": 26774,
    "sessionIndex": 446,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x1042c45399a37d6fb55e03c2160f68ea44ffb5613dc0bf45404c4b8a40f8c463cfc0363f39c1ef5d19c23fe40681435d51d49049db284de4099a151625ac8e88"
}