Extrinsic 20626-2

{
  "heartbeat": {
    "blockNumber": 20625,
    "sessionIndex": 343,
    "validatorsLen": 4,
    "authorityIndex": 0
  },
  "signature": "0xd2e119f5cee6db6e25ad3c5a638e5935dbfd08e1e460ec031186ada878a12601c467fa6bdaca746e862de7b58931b5e3148f9037f0036aeed02ddb3e660df385"
}