Extrinsic 138878-1

{
  "heartbeat": {
    "blockNumber": 138877,
    "sessionIndex": 2314,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x6a2afbac95ad291e8319a8b1aa161ee6f8611508977d14ad95ff726c11566b3bde7d0f6f551c1bcc7cb80ca7afc6ad6a0862ddf95fcb228dfe2523179b226181"
}