curl --request POST \
  --url https://api.openmic.ai/h/v2/phone-numbers/unlink-agent \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/json' \
  --data '
{
  "phone_number_id": "pn_abc123",
  "direction": "inbound"
}
'

{
  "id": "<string>",
  "phone_number": "<string>",
  "name": "<string>",
  "inbound_agent_uid": "<string>",
  "outbound_agent_uid": "<string>",
  "created_at": "2023-11-07T05:31:56Z",
  "updated_at": "2023-11-07T05:31:56Z"
}