Extrinsic 25576-2

{
  "heartbeat": {
    "blockNumber": 25574,
    "sessionIndex": 426,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x929bf1ad8f470fa9eef4498db657731ba058e662d312961f3c8d4d7f4550de0d14903dfe97f2478454f740ae5da76b18c90df497e0704ba932f8da91f889a88f"
}