Write Pulse

{
  "public": {
    "Sr25519": "0x1a005e90a3e6a3dfe9288ab1201eb4b95be88b5ac1b18cd1f8a8eaefceef094a"
  },
  "pulses": [
    {
      "round": "25,670,373",
      "signature": "0xb9d5451f275aa9a48b2f6f405b9df0ab6b671608f8d00a079c442c19ec1da66c88d309a195e68103616fa84715bacf6e",
      "randomness": "0xe17ba60201577dc29e9f05c78f666519cd1b82c3daafac1555bf2005d304bbeb"
    }
  ],
  "blockNumber": "7,437,885"
}

{
  "Sr25519": "0xb66fcd0ea68e5563f77f3c738fbec214b786788742cafbf36900aa515951a765a71240e0409508d3826bdf7b9044555c2023b4f06d482a10385cdedd51de388b"
}