Extrinsic 44374-1

{
  "heartbeat": {
    "blockNumber": 44372,
    "sessionIndex": 739,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0xec60c90f7a40dda013758091bc9e8d4e20858555706f01b7f3094b20962f231760b57185d71cf8c63b8cda98c1da27f1f0f340fd1c17c532e1330d6252e85f88"
}