Extrinsic 26475-1

{
  "heartbeat": {
    "blockNumber": 26473,
    "sessionIndex": 441,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x2ea8fe2774500ee58d163db3f6a85d8a04e947ef389e975b9d4060004e16233923c4aabf1e96e827f5e1d7780fdf4134b5120b70ffd9c35b516585869526ee8c"
}