NewValidatorTransaction

Returns a serialized `new_validator` transaction. You need to provide the address of a basic account (the sender wallet) to pay the transaction fee and the validator deposit. Since JSON doesn't have a primitive for Option (it just has the null primitive), we can't have a double Option. So we use the following work-around for the signal data: "" = Set the signal data field to None. "0x29a4b..." = Set the signal data field to Some(0x29a4b...).

const res = await fetch("http://127.0.0.1:8648", {
method: "POST",
headers: { "Content-Type": "application/json" },
body: JSON.stringify({
  jsonrpc: "2.0",
  method: "createNewValidatorTransaction",
  params: ["senderWallet", "validatorWallet", "signingSecretKey", "votingSecretKey", "rewardAddress", "signalData", 0, 0],
  id: 1
})
});
const data = await res.json();