curl --location --request POST 'https://developer.salesmartly.com/api/v2/purchase-individual-whatsapp-app' \
--header 'external-sign: c4f2f617d8ff4bfe5116dab980fa251' \
--form 'project_id="a1b2c3"' \
--form 'country="hk"'{
"code": 0,
"data": {
"status": 0,
"whatsapp_id": 0
},
"msg": "string"
}