Get Signed Transaction

Option 1: Write your function: Get Signed Transaction

After Step 1, you will get a estimate_trx Is the cost of the buy order. Then you will sing transactionBuilder to create a transfer transaction with an amount transfer equal estimate_trx from the buyer's address to the fund of the Tronsave market:

const dataSendTrx = await tronWeb.transactionBuilder.sendTrx('TRONSAVE_FUND_ADDRESS', estimate_trx, 'BUYER_ADDRESS')
const signed_tx = await tronWeb.trx.sign(dataSendTrx, 'PRIVATE_KEY');

• change BUYER_ADDRESSIs the buyer's public address

• change PRIVATE_KEY Is the buyer's private key

• change TRONSAVE_FUND_ADDRESS Is our Tronsave fund address on the mainnet

Our Tronsave fund address is

Mainnet

TWZEhq5JuUVvGtutNgnRBATbF8BnHGyn4S

Option 2: Use Tronsave Get Signed Transaction API

POST https://api.tronsave.io/v2/signed-tx

Rate limit: 15 requests per 1 second

Request params

Field	Position	Type	Required	Description
address	body	string	true	The buyer's public address
privateKey	body	string	true	The buyer's private key
estimateTrx	body	number	true	The amount of TRX to be paid is calculated in SUN.(estimateTrx in Step 1)

Request params example

{
    "address": "TM6ZeEgpefyGWeMLuzSbfqTGkPv8Z65432",
    "privateKey": "{{yourprivateKey}}",
    "estimateTrx": 13500000 //from Step1
 }

Responses

    {
        "visible": false,
        "txID": "795f8195893e8da2ef2f70fc3a1f2720f9077244c4b7b1c50c99c72fda675a32",
        "raw_data_hex": "0a02b32e2208ce1cb373c238875e4098fbd9a0eb325a68080112640a2d747970652e676f6f676c65617069732e636f6d2f70726f746f636f6c2e5472616e73666572436f6e747261637412330a1541417ca6f74356a5d4454498e3f4856c945a04ab01121541055756f33f419278d9ea059bd2b21120e6add74818e0e5a40170b8a6d6a0eb32",
        "raw_data": {
            "contract": [
                {
                    "parameter": {
                        "value": {
                            "to_address": "41055756f33f419278d9ea059bd2b21120e6add748",
                            "owner_address": "41417ca6f74356a5d4454498e3f4856c945a04ab01",
                            "amount": 2700000
                        },
                        "type_url": "type.googleapis.com/protocol.TransferContract"
                    },
                    "type": "TransferContract"
                }
            ],
            "ref_block_bytes": "b32e",
            "ref_block_hash": "ce1cb373c238875e",
            "expiration": 1746778095000,
            "timestamp": 1746778035000
        },
        "signature": [
            "xxxxxxxxxxxxxxxxxxx"
        ]
    }