curl --request POST \
  --url https://api.notifly.tech/projects/{projectId}/messages/text-message/blockservice/recipients \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "unsubscribeNo": "0800000000",
  "recipientNoList": [
    "0100000000",
    "0100000001"
  ]
}
'

{
  "success": true
}