curl --request POST \
  --url https://api.gelato.cloud/rpc \
  --header 'Content-Type: application/json' \
  --header 'X-API-Key: <x-api-key>' \
  --data '
{
  "id": 1,
  "jsonrpc": "2.0",
  "method": "relayer_sendTransactionMultichain",
  "params": {
    "transactions": [
      {
        "chainId": "84532",
        "to": "0xE27C1359cf02B49acC6474311Bd79d1f10b1f8De",
        "data": "0xd09de08a",
        "payment": {
          "type": "sponsored"
        }
      },
      {
        "chainId": "11155111",
        "to": "0xE27C1359cf02B49acC6474311Bd79d1f10b1f8De",
        "data": "0xd09de08a",
        "payment": {
          "type": "sponsored"
        }
      }
    ]
  }
}
'

{
  "id": 1,
  "jsonrpc": "2.0",
  "result": {
    "tasks": [
      {
        "chainId": "84532",
        "id": "0x0e670ec64341771606e55d6b4ca35a1a6b75ee3d5145a99d05921026d1527331",
        "status": 100,
        "error": {
          "code": 123,
          "message": "<string>"
        }
      }
    ]
  }
}