Write Pulse

{
  "public": {
    "Sr25519": "0x1c7997818cda64bb7b0eff4726b379c86667f8a10ddb396bbac1374fc0049b76"
  },
  "pulses": [
    {
      "round": "25,612,830",
      "signature": "0xa5c91f3afea1bd0ef93e0a41fa570a3e19077159c90692e00d126afd1c96022765ca2331318cce42d4330ddc5e4b1372",
      "randomness": "0x615348217789177f3fee4eb093280e3724064d337710ced65e081672ff7d3446"
    }
  ],
  "blockNumber": "7,423,523"
}

{
  "Sr25519": "0xf21f984186bbe51899d99407a78c2fc3b4bb7c3832749f7e26f076d16203c2546a0cc719b9db9ea5280fbd79496944fb6c5244a6559635ebd5bc77a0d8a42388"
}