curl --request POST \
  --url http://localhost:8080/api/agents/{agentId}/tools/post-call-webhook/assign \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --header 'X-API-SECRET: <api-key>' \
  --data '
{
  "webhook_id": "<string>"
}
'

{
  "message": "Post-call webhook assigned successfully",
  "status": "success",
  "error": null,
  "data": {}
}