curl --request PUT \
  --url https://api.zudu.ai/api/calls/{callId} \
  --header 'Content-Type: application/json' \
  --header 'X-API-KEY: <api-key>' \
  --header 'X-API-SECRET: <api-key>' \
  --data '
{
  "call_status": "ONGOING",
  "direction": "OUTBOUND",
  "from_number": "+1111111111",
  "metadata": {
    "updated_field": "new_value"
  }
}
'

{
  "message": "Call updated successfully",
  "status": "success",
  "error": null,
  "data": {
    "operation": "update",
    "organization_id": "org-789",
    "call": {
      "id": "550e8400-e29b-41d4-a716-446655440000",
      "agent_id": "agent-123",
      "call_id": "call-456",
      "organization_id": "org-789",
      "call_status": "ongoing",
      "call_type": "phone_call",
      "direction": "outbound",
      "from_number": "+1111111111",
      "transcript_object": [],
      "transcript_with_tool_calls": [],
      "events": [],
      "metadata": {
        "test": true,
        "priority": "high",
        "updated_field": "new_value"
      },
      "opt_out_sensitive_data_storage": false
    }
  }
}