curl --request POST \
  --url https://api.gelato.digital/smartwallet \
  --header 'Content-Type: application/json' \
  --data '{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "wallet_prepareCalls",
  "params": [
    {
      "chainId": 123,
      "from": "<string>",
      "calls": [
        {
          "to": "<string>",
          "data": "<string>",
          "value": "<string>"
        }
      ],
      "capabilities": {
        "wallet": {
          "type": "gelato",
          "encoding": "safe",
          "version": "<string>"
        },
        "payment": {
          "type": "sponsored",
          "sponsorApiKey": "<string>"
        },
        "authorization": {
          "address": "<string>",
          "authorized": true
        },
        "nonceKey": "<string>"
      }
    }
  ]
}'

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "chainId": 123,
    "signatureRequest": {
      "type": "<string>",
      "data": {
        "sender": "<string>",
        "nonce": "<string>",
        "initCode": "<string>",
        "callData": "<string>",
        "signature": "<string>",
        "paymasterAndData": "<string>",
        "callGasLimit": "<string>",
        "verificationGasLimit": "<string>",
        "preVerificationGas": "<string>",
        "maxFeePerGas": "<string>",
        "maxPriorityFeePerGas": "<string>",
        "factory": "<string>",
        "factoryData": "<string>"
      }
    },
    "context": {
      "wallet": {
        "encoding": "<string>"
      },
      "payment": {
        "type": "<string>",
        "sponsorApiKey": "<string>"
      },
      "factory": {
        "address": "<string>",
        "data": "<string>"
      },
      "entryPoint": {
        "version": "<string>",
        "address": "<string>"
      },
      "userOp": {
        "sender": "<string>",
        "nonce": "<string>",
        "initCode": "<string>",
        "callData": "<string>",
        "signature": "<string>",
        "paymasterAndData": "<string>",
        "callGasLimit": "<string>",
        "verificationGasLimit": "<string>",
        "preVerificationGas": "<string>",
        "maxFeePerGas": "<string>",
        "maxPriorityFeePerGas": "<string>",
        "factory": "<string>",
        "factoryData": "<string>"
      },
      "quote": {
        "fee": {
          "amount": "<string>",
          "rate": 123,
          "decimals": 123
        },
        "gas": {
          "amount": "<string>",
          "l1": "<string>"
        }
      }
    }
  }
}