curl --location --request POST 'https://snakk-backend-production.up.railway.app/api/phone-numbers//assign' \
--header 'X-API-Key: <api-key>' \
--header 'Content-Type: application/json' \
--data-raw '{
"agent_id": "2b1e3b65-2c04-4fa2-a2d7-467901e98978"
}'