Extrinsic 138588-1

{
  "heartbeat": {
    "blockNumber": 138587,
    "sessionIndex": 2309,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x4a972c08d1e1ea6fd74147d597b555ca4ae788d8c62bf532a7c9f2beb80ee9743eb0c45df1cb78b1ae28fa00c9d90bbaa27990eb2152aad3d9ec5c0bc62e4f89"
}