curl --request POST \
  --url https://api.relay.link/execute \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <x-api-key>' \
  --data '
{
  "executionKind": "rawCalls",
  "data": {
    "chainId": 123,
    "to": "<string>",
    "data": "<string>",
    "value": "<string>",
    "authorizationList": [
      {
        "chainId": 123,
        "address": "<string>",
        "nonce": 123,
        "yParity": 123,
        "r": "<string>",
        "s": "<string>"
      }
    ]
  },
  "executionOptions": {
    "referrer": "<string>",
    "subsidizeFees": true,
    "destinationChainExecutionData": {
      "calls": [
        {
          "to": "<string>",
          "value": "<string>",
          "data": "<string>"
        }
      ],
      "authorizationList": [
        {
          "chainId": 123,
          "address": "<string>",
          "nonce": 123,
          "yParity": 123,
          "r": "<string>",
          "s": "<string>"
        }
      ]
    }
  },
  "requestId": "<string>"
}
'

{
  "message": "Transaction submitted",
  "requestId": "0xabc123..."
}