curl --request POST \
  --url https://us.getconvoy.cloud/api/v1/projects/{projectID}/subscriptions/test_filter \
  --header 'Authorization: <api-key>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "request": {
    "body": "<unknown>",
    "header": "<unknown>"
  },
  "schema": {
    "body": "<unknown>",
    "header": "<unknown>"
  }
}
'

{
  "message": "<string>",
  "status": true,
  "data": true
}