curl --request GET \
  --url https://arch-testnet.gomaestro-api.org/v0/rpc/transaction/{tx_hash}/hex \
  --header 'api-key: <api-key>'

{
  "data": {
    "accounts_tags": [
      "<string>"
    ],
    "bitcoin_mined_time": 123,
    "bitcoin_txid": "<string>",
    "hash": "<string>",
    "runtime_transaction": {
      "message": {
        "instructions": [
          {
            "accounts": [
              {
                "is_signer": true,
                "is_writable": true,
                "pubkey": "<string>"
              }
            ],
            "data": "<string>",
            "program_id": "<string>"
          }
        ],
        "signers": [
          "<string>"
        ]
      },
      "signatures": [
        "<string>"
      ],
      "version": 123
    },
    "status": "<unknown>"
  },
  "last_updated": {
    "block_hash": "<string>",
    "block_height": 123
  }
}