I have the follow from using const tx = api.deserializeTransaction(body.packed_trx);.

  "expiration": "1970-07-18T18:12:21.000",
  "ref_block_num": 1544,
  "ref_block_prefix": 84344837,
  "max_net_usage_words": 0,
  "max_cpu_usage_ms": 0,
  "delay_sec": 2,
  "context_free_actions": [],
  "actions": [
      "account": "......k4..4",
      "name": "...k",
      "authorization": [],
      "data": ""
      "account": "",
      "name": ".....1c5..1k",
      "authorization": [],
      "data": ""
  "transaction_extensions": []

I would like to derive the human readable action name from "name": ".....1c5..1k",. Ideally with eosjs.

  • Should eos-js not do this automatically when deserializing?
    – cmadh
    Commented Oct 14, 2020 at 16:11

1 Answer 1


The deserializeTransaction call should return the correct data already. It seems like it's trying to deserialize a transaction from a wrong transaction buffer. The expiration date and other fields don't make sense either. Make sure to parse it as an Uint8Array first. If body.packed_trx is a hex string, you can use this:

const txHex = body.packed_trx
const txBytes = new Uint8Array(Buffer.from(txHex, `hex`))
const deserializedTx = api.deserializeTransaction(txBytes);
console.log(`DESERIALIZED TX`, deserializedTx);

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