Extrinsic 27758-1

{
  "heartbeat": {
    "blockNumber": 27756,
    "sessionIndex": 462,
    "validatorsLen": 4,
    "authorityIndex": 3
  },
  "signature": "0x74ea5e472ef2f1ffb6dd9b78b2203a2cb1ccc8f7910c8c92ada13b0edf6efc2e92f9d4595619b8bf959d2bbb3febaeab669cc319ef0f1e03b2d6293b73323a81"
}