{
    "domain_name": "string",
    "host_name": "string",
    "is_cloud_flare_proxied": true,
    "target_info": "string",
    "target_type": "rcs"
}curl --location --request POST 'https://api.v2.rainyun.com/product/domain/free_subdomain' \
--header 'x-api-key;' \
--header 'rain-dev-token: {{rain-dev-token}}' \
--header 'Content-Type: application/json' \
--data-raw '{
    "domain_name": "string",
    "host_name": "string",
    "is_cloud_flare_proxied": true,
    "target_info": "string",
    "target_type": "rcs"
}'{}