Extrinsic 149378-1

{
  "heartbeat": {
    "blockNumber": 149377,
    "sessionIndex": 2489,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0xc8cb2774fcadc8889d81dcbb7d6adbb38e17fae32247ab9075bed1738ddac27f294fb2d8307e9ed7d26aab236d62b84677068c5987da1849b8aa0860e80ac380"
}