Extrinsic 55717-1

{
  "heartbeat": {
    "blockNumber": 55715,
    "sessionIndex": 928,
    "validatorsLen": 4,
    "authorityIndex": 2
  },
  "signature": "0x2420cb3afd9fa0c6016aa9910adba9fd632f7b461594bbecad9dc057c3b902445acf2d752d53c8a0e06818667dcb48b3536a96ee561a2c3f75565f1c0b0d5d89"
}