Extrinsic 137439-1

{
  "heartbeat": {
    "blockNumber": 137438,
    "sessionIndex": 2290,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x64a803801b41dbbf2faed001078ca1936a196d44d09a75cc02339a97f0a2f202c7871bf869b3f865474166790096728f74372d22947c727110a8592e6d562e8a"
}