Extrinsic 2528-1

{
  "heartbeat": {
    "blockNumber": 2527,
    "sessionIndex": 42,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x140f50e327882ad88e5db5251c83696e51b1ced00a4f525e8acb968503974c53e28a2186b2d8346aec2140bf457297290d7ea9258aaca7d06c59a6ce6bb26886"
}