text: known_chains = {
      "STEEM": {
          "chain_id": "0" * int(256 / 4),
          "prefix": "STM",
          "steem_symbol": "STEEM",
          "sbd_symbol": "SBD",
          "vests_symbol": "VESTS",
      },
      "TEST": {
          "chain_id":
              "9afbce9f2416520733bacb370315d32b6b2c43d6097576df1c1222859d91eecc",
          "prefix":
              "TST",
          "steem_symbol":
              "TESTS",
          "sbd_symbol":
              "TBD",
          "vests_symbol":
              "VESTS",
      },
  }
  