Write Pulse

{
  "public": {
    "Sr25519": "0x1a005e90a3e6a3dfe9288ab1201eb4b95be88b5ac1b18cd1f8a8eaefceef094a"
  },
  "pulses": [
    {
      "round": "25,540,374",
      "signature": "0xa7f61c06e71f0cdaaba8fcec40942e711e1d56c1e322437a5f0b96b00ed9fe3d762df11f3329b9c69bcce6a7cb679aba",
      "randomness": "0xb9c9d7f0303db0db9889adf27b803ff265860779681402a79bb219da736a8501"
    }
  ],
  "blockNumber": "7,405,429"
}

{
  "Sr25519": "0x3e0a9924e16f6dd431a7db465ed0c67aacaabed80a4cdcefddad440f6403640320d8afa4da7d60c8b1366e1e19a8e9ae85f7ec654c312ecce0abf40540294488"
}