Extrinsic 26599-1

{
  "heartbeat": {
    "blockNumber": 26597,
    "sessionIndex": 443,
    "validatorsLen": 4,
    "authorityIndex": 1
  },
  "signature": "0x0a6d0a69eb1536ef3ba994d100ff1943eb181b46f407d2a93e0c64e743d8230fab31525e971e6e2876e7b8a0899b0357edfb8a0032e5666620c9e24f14598389"
}