Extrinsic 26668-1

{
  "heartbeat": {
    "blockNumber": 26667,
    "sessionIndex": 444,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0x3a0d61110dccac303f3d261e0a50c3a5ab7fda5ad39e2e4c21940c299380f727c964b03f0aaf62bc89d229c4b7cc8e37d7722fc6f3b7531419ce71ccbc074f83"
}