curl --location --request POST 'https://api.falken.ltd/api/admin/email/lists//subscribers' \
--header 'Content-Type: application/json' \
--data-raw '{
"email": "user@example.com",
"firstName": "string",
"lastName": "string",
"listSlug": "string",
"recaptchaToken": "string"
}'{
"id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",
"email": "string",
"firstName": "string",
"lastName": "string",
"status": "string",
"subscribedUtc": "2019-08-24T14:15:22.123Z",
"unsubscribedUtc": "2019-08-24T14:15:22.123Z",
"source": "string"
}