Extrinsic 64173-1

{
  "heartbeat": {
    "blockNumber": 64172,
    "sessionIndex": 1069,
    "validatorsLen": 1,
    "authorityIndex": 0
  },
  "signature": "0x4681d19b5e41ce8ac28beaf3c076cc8b9ba624bd187944a4499b96cad5f2d9207cb0264eb3cdb7366416db4caae708d687f84c49c632699358b7e1cd796c4183"
}