erc20Approve static method
Request data when send erc20 approve.
contractAddress is token contract address.
spender is spender public address.
amount is token amount.
Implementation
static Future<String> erc20Approve(
String contractAddress, String spender, BigInt amount) async {
var list2 = [spender, amount.toString()];
var list1 = [contractAddress, "erc20_approve", list2];
const method = "particle_abi_encodeFunctionCall";
final params = list1;
return await EvmService.rpc(method, params);
}