send_set_treasury.json

{
  "jsonrpc": "2.0",
  "method": "icx_sendTransaction",
  "params": {
    "version": "0x3",
    "from": "<YOUR_WALLET_ADDRESS>",
    "value": "0xfffff05b59d3b2",
    "stepLimit": "0x200000",
    "nid": "0x3",
    "nonce": "0x2",
    "to": "<SCORE_ADDRESS>",
    "dataType": "call",
    "data": {
      "method": "set_treasury"
    }
  },
  "id": 1
}