curl --request POST \
  --url https://production.runalloy.com/headless/startInstallation \
  --header 'Authorization: <authorization>' \
  --header 'Content-Type: application/json' \
  --header 'x-api-version: <x-api-version>' \
  --data '
{
  "userId": "<string>",
  "integrationId": "<string>",
  "credentialIds": [
    "<string>"
  ],
  "workflowIds": [
    "<string>"
  ]
}
'

{
  "data": [
    {
      "workflowId": "65b7005ae9761102a64ddd3b",
      "app": "netsuite",
      "blockId": "3a8a8e50-f0e5-488b-9b7b-53656e93d392",
      "fields": [
        {
          "name": "customerEmail",
          "displayName": "Customer's Email",
          "type": "string",
          "required": true
        }
      ]
    }
  ],
  "installationId": "65b701c2f5ba66db3bc53a68"
}