# Pay payee updateAccount fee

Payer can pay some tokens to the payee for the first `updateAccount` fee when transferring, including ERC20 transfer and NFT transfer.

Set `payPayeeUpdateAccount` as **true** in ERC20 transfer and NFT transfer can pay the payee `updateAccount` fee.

## 1. Checking whether the payer can pay the payee updateAccount fee

Get the payee account info via [api/v3/account](https://docs-uat.loopring.io/en/dex_apis/getAccount.html).

* If the response is account not found, or nonce is 0 and tags do not contain "FirstUpdateAccountPaid", the payer can pay the updateAccountFee

Below are some examples that the payer can pay the updateAccount fee for the payee

### 1.1 Account not found

```
https://uat2.loopring.io//api/v3/account?owner=0x60d2D76ed6E07a9F46EEe7d444257148E08B7bbb

respone:
{"resultInfo":{"code":101002,"message":"account not found"}}
```

### 1.2 Account nonce is 0 and tag does not contain FirstUpdateAccountPaid

```
https://uat2.loopring.io//api/v3/account?owner=0x1111111111111111111111111111111111111111

respone:
{
	"accountId": 10500,
	"owner": "0x1111111111111111111111111111111111111111",
	"frozen": false,
	"publicKey": {
		"x": "",
		"y": ""
	},
	"tags": "",
	"nonce": 0,
	"keyNonce": 0,
	"keySeed": ""
}
```

## 2. ERC20 transfer

### 2.1 Get fee

[GET api: api/v3/user/offchainFee](https://docs-uat.loopring.io/en/dex_apis/getBusinessFee2.html)

transfer: requestType is 15 (TRANSFER\_AND\_UPDATE\_ACCOUNT)

```
header: 
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF

request:
https://uat2.loopring.io/api/v3/user/offchainFee?accountId=11329&requestType=15

response:
{
	"gasPrice": "2194508101",
	"fees": [{
		"token": "ETH",
		"fee": "1920000000000",
		"discount": 1
	}, {
		"token": "LRC",
		"fee": "4770000000000000",
		"discount": 0.8
	}, {
		"token": "USDT",
		"fee": "2190",
		"discount": 0.8
	}, {
		"token": "DAI",
		"fee": "2730000000000000",
		"discount": 1
	}]
}
```

### 2.2 get storageID

[GET api: api/v3/storageId](https://docs-uat.loopring.io/en/dex_apis/getNextStorageId.html)

```
header: 
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF

request:
https://uat2.loopring.io/api/v3/storageId?accountId=11329&sellTokenId=0

response:
{
	"orderId": 0,
	"offchainId": 1
}
```

### 2.3 submit transfer

[POST api: api/v3/transfer](https://docs-uat.loopring.io/en/dex_apis/submitTransfer.html)

storageId: the response in get storageID

maxFee: the response in get fee

payeeId: set to 0 is ok

```
https://uat2.loopring.io/api/v3/transfer

header: 
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF
X-API-SIG = 0xf4f902bffcdc2e640efe8f86ef970b65bea4ad1312e8ab33b200852d87a0fd881a584e201b52d768f333eb39b084ccde42dfe110fb683b81319837c6e92fa2691c03

request:
{
	"ecdsaSignature": "0x09975137d489dcc8616b90b3ba4ea81b8f2eb6d93324255f38f077bee11b568960997054b31ac6b33f4609ebed72fa85808b8928ce6be42aa98d83da938859ad1c03",
	"eddsaSignature": "0x14e9d6ba841634810ef8c893446eae514ef0e7443ec2db9ca6d4347eb82f586c196d9dabb3f72afb2ff1e8580ce35e6674dbcc42ed40cd908846e8aef009b75b0577e7a9c0e107ad3dfa4bd180b720a19be6e56fe64206624a531d16ea909b90",
	"exchange": "0x2e76EBd1c7c0C8e7c2B875b6d505a260C525d25e",
	"hashApproved": "0x1876c9f920fa78a91a56755d845c33964111d6f932767cf71f47efd87ef176a8",
	"maxFee": {
		"volume": "2190",
		"tokenId": 2
	},
	"memo": "",
	"payPayeeUpdateAccount": true,
	"payeeAddr": "0xbb6924b24ba5c6ece81f056cf54e5d720846c188",
	"payeeId": 0,
	"payerAddr": "0x53f879debad6d97371bfd45875a2ec689d6af798",
	"payerId": 11554,
	"storageId": 17,
	"token": {
		"volume": "1000000",
		"tokenId": 2
	},
	"validUntil": 1646747756
}

response:
{
	"hash": "0x099301b1acb2634f1ea3f15e14ab078a054a1dee69c60b2f60ce7350eccd217b",
	"status": "processing",
	"isIdempotent": false
}
```

## 3. NFT transfer

### 3.1 Get fee

[GET api: api/v3/user/nft/offchainFee](https://docs-uat.loopring.io/en/dex_apis/getNftRequestFees.html)

transfer: requestType is 19

```
header: 
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF

request:
https://uat2.loopring.io/api/v3/user/nft/offchainFee?accountId=11329&requestType=19&tokenSymbol=0x0000000000000000000000000000000000000000&amount=2000000000000

response:
{
	"gasPrice": "1500000007",
	"fees": [{
		"token": "ETH",
		"fee": "25100000000000",
		"discount": 1
	}, {
		"token": "LRC",
		"fee": "146800000000000000",
		"discount": 1
	}, {
		"token": "USDT",
		"fee": "105300",
		"discount": 1
	}, {
		"token": "DAI",
		"fee": "105300000000000000",
		"discount": 1
	}]
}
```

### 3.2 get storageID

[GET api: api/v3/storageId](https://docs-uat.loopring.io/en/dex_apis/getNextStorageId.html)

```
header: 
X-API-KEY = bEef7a3Nzk7lgaHm85E0O1JO5ufu0iQ96p3bCmrsZz8TLGG83jTpPDYwcjUC0vlF

request:
https://uat2.loopring.io/api/v3/storageId?accountId=11329&sellTokenId=0

response:
{
	"orderId": 0,
	"offchainId": 1
}
```

### 3.3 submit nft transfer

[POST api: api/v3/nft/transfer](https://docs-uat.loopring.io/en/dex_apis/submitNftTransfer.html)

```
request:
{
      exchange: '0x2e76EBd1c7c0C8e7c2B875b6d505a260C525d25e',
      fromAccountId: 11120,
      fromAddress: '0x25B51D4c01c974f8f725be5c8ca5ccF5537f3e85',
      toAccountId: 0,
      toAddress: '0x35405E1349658BcA12810d0f879Bf6c5d89B512C',
      token: {
        tokenId: 32773,
        nftData: '0x012b2fe4dd01019bbe456379ca4c0c174064f7fa321d42ef9373cd58dda92fbc',
        amount: '1'
      },
      maxFee: { tokenId: 0, amount: '25100000000000' },
      storageId: 17,
      validUntil: 1667396982,
      payPayeeUpdateAccount: true
}

response:
{
      hash: '0x1df910bc73f2e90d71fdcd8fc1301c70184c62d866cb2e56871db6d16af838f9',
      raw_data: {
        hash: '0x1df910bc73f2e90d71fdcd8fc1301c70184c62d866cb2e56871db6d16af838f9',
        status: 'processing',
        isIdempotent: false
      }
}
```