curl --location --request POST 'https://api.zapmail.ai/api/v2/placement-tests/cancel-subscription' \
--header 'x-auth-zapmail: YOUR_API_KEY' \
--header 'x-service-provider: GOOGLE' \
--header 'x-workspace-key;' \
--header 'Content-Type: application/json' \
--data-raw '{
"subscriptionId": "sub_1234567890",
"revertCancellation": false
}'{ "status": 200, "message": "Placement test subscription cancellation initiated", "data": null }