Create a contact

curl --request POST \
  --url https://app.formbricks.com/api/v2/management/contacts \
  --header 'Content-Type: application/json' \
  --header 'x-api-key: <api-key>' \
  --data '{
  "userId": "<string>",
  "environmentId": "<string>"
}'

{
  "id": "<string>",
  "userId": "<string>",
  "createdAt": "2021-01-01T00:00:00.000Z",
  "updatedAt": "2021-01-01T00:00:00.000Z",
  "environmentId": "<string>"
}