Extrinsic 39278-1

{
  "heartbeat": {
    "blockNumber": 39276,
    "sessionIndex": 654,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xaa8cef44ddcb6045fb22df1c694511ee9e5e74e66880ea5fcb4b6473f56e6f32015c2d256348ee979d5a9c2ccffb79456b0151aecf31af4d5487c97851204e80"
}