Extrinsic 28748-1

{
  "heartbeat": {
    "blockNumber": 28746,
    "sessionIndex": 479,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xb882bc004ed20600730976b5d2bc698fd7157d678024611cb28c1cd7d040343ebf1e669eb17a1c78587b78cc35e0211ba3d09f3a195d44b34ae3d2c7455d5888"
}