Test Solidity/EVM input encoding

testFunctionCallEncoding.js

let abi = {
      "name" : "balanceOf",
      "stateMutability" : "view",
      "outputs" : [
      ],
      "inputs" : [
         {
            "name" : "expiry",
            "type" : "uint256"
         },
         {
            "name" : "tickets",
            "type" : "uint256[]"
         },
         {
            "name" : "v",
            "type" : "uint8"
         },
         {
            "name" : "r",
            "type" : "bytes32"
         },
         {
            "name" : "s",
            "type" : "bytes32"
         },
         {
            "name" : "recipient",
            "type" : "address"
         }
      ],
      "constant" : false,
      "payable" : true,
      "type" : "function"
   }

let parameters = [
  0x000000000000000000000000000000000000000000000000000000005c53968b,
  ["0x000032303139303133313132343435392d313230300000000000313200000000"],
  0x000000000000000000000000000000000000000000000000000000000000001b,
  "0xca0bb06bdedbaacda05efdeaf5f5a5f17d15bf679aeb838f928f016e4a572ce7",
  "0x2785e0591c3ecf8d1739f46bdbb5b96e1f11450b8c278dd93119997b051f786e",
  "0x6fed4f99bcbec84125110918fd214099c1cbb57f"]
let x = web3.eth.abi.encodeFunctionCall(abi, parameters);
console.log(`x: ${x}`)

//Output:
//
//0x8d2b0768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And 0xc0 = 192 (bytes), which is the byte offset where the tokenIds array start in the data (after chopping off the function call hash)