Extrinsic 37770-1

{
  "heartbeat": {
    "blockNumber": 37768,
    "sessionIndex": 629,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x4c1dde71eae1d88b5c815d20a2781e868aaeea6280f867e4e988a1fbf810f108252e5dc34221d922da7428c8fd740b7fc71cdead7c197ef7c411c71a26e1298d"
}