curl --location --request POST 'http://dev-cn.your-api-server.com/api/registerA2PBrand' \
--header 'Authorization;' \
--header 'Content-Type: application/json' \
--data-raw '{
"businessName": "string",
"ein": "string",
"vertical": "string",
"address": "string",
"city": "string",
"state": "string",
"postalCode": "string",
"country": "string",
"email": "string",
"type": "string",
"website": "string",
"opt_in_info": "string",
"messageSamples": "string",
"trusted_user": "string"
}'
{
"message": "A2P Brand registration successful.",
"data": {...}
}