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Swap

Init swap from one token to another. It will provide the best route and DEX for the swap.

/swap

This method will find the best route of the swap

GET | POST /initSwap { chainId, ownerAddress, fromTokenAddress, fromValue } → { … }*

POST Data:
```
{
  "chainId" : 1, 
  "ownerAddress" : "0x1234....1234",
  "fromValue" : "100000000000000000",
  "fromTokenAddress" : "0x1234....1234",
  "toTokenAddress" : "0x1234....1234",
  "slippage" : 10
}
```
Where:
- ownerAddress - Address of the owner. Please use 0x0000000000000000000000000000000000000000 for the ETH
- chainId - Got from previous step
- fromValue - fromTokenAddress value
- toTokenAddress - toTokenAddress value
- slippage - slippage from 0 to 50
Response:
```
{
   "metamaskDeepLink" : "https://link-to-request-the-metamask-wallet/...",
   "transaction": { ... }
}
```
Please notice! In case when when you have no allowance to swap this method will return allowance transaction first.