Check Approval

curl --request POST \
  --url https://trade-api.gateway.uniswap.org/v1/lp/approve \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '
{
  "protocol": "V2",
  "token0": "<string>",
  "token1": "<string>",
  "positionToken": "<string>",
  "chainId": 1,
  "walletAddress": "<string>",
  "amount0": "<string>",
  "amount1": "<string>",
  "generatePermitAsTransaction": false,
  "positionAmount": "<string>",
  "simulateTransaction": true
}
'

{
  "requestId": "<string>",
  "token0Approval": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "token1Approval": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "token0Cancel": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "token1Cancel": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "positionTokenApproval": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "permitData": {
    "domain": {},
    "values": {},
    "types": {}
  },
  "token0PermitTransaction": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "token1PermitTransaction": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "positionTokenPermitTransaction": {
    "to": "<string>",
    "from": "<string>",
    "data": "<string>",
    "value": "<string>",
    "chainId": 1,
    "gasLimit": "<string>",
    "maxFeePerGas": "<string>",
    "maxPriorityFeePerGas": "<string>",
    "gasPrice": "<string>"
  },
  "gasFeeToken0Approval": "<string>",
  "gasFeeToken1Approval": "<string>",
  "gasFeePositionTokenApproval": "<string>",
  "gasFeeToken0Cancel": "<string>",
  "gasFeeToken1Cancel": "<string>",
  "gasFeeToken0Permit": "<string>",
  "gasFeeToken1Permit": "<string>",
  "gasFeePositionTokenPermit": "<string>"
}