Extrinsic 37878-1

{
  "heartbeat": {
    "blockNumber": 37877,
    "sessionIndex": 631,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x703bbce801da99dcec71ff98d1414b2d8245631cc81edc1b936bb89fed1a191668e99cbb8d554ee913e1bb8bd7202f80ac2003e71f96a853da364bf15457278b"
}