Listar assinaturas de webhook

{  "items": [    {      "id": "whs_abc123",      "tenant_id": "string",      "organization_id": "string",      "url": "string",      "events": [        "string"      ],      "is_active": true,      "metadata": {},      "created_by": "string",      "created_at": "2019-08-24T14:15:22Z",      "updated_at": "2019-08-24T14:15:22Z"    }  ],  "page_info": {    "end_cursor": "string",    "start_cursor": "string",    "has_next_page": true,    "has_previous_page": true  }}

{  "type": "unauthorized",  "title": "Authentication Required",  "status": 401,  "detail": "authentication required",  "code": "unauthorized.auth_required",  "request_id": "req_abc123",  "timestamp": "2026-02-15T12:00:00Z",  "documentation_url": "https://docs.nobur.com.br/errors/unauthorized"}

{  "type": "forbidden",  "title": "Access Denied",  "status": 403,  "detail": "insufficient permissions",  "code": "forbidden.insufficient_permissions",  "request_id": "req_abc123",  "timestamp": "2026-02-15T12:00:00Z",  "documentation_url": "https://docs.nobur.com.br/errors/forbidden"}

{  "type": "rate_limit",  "title": "Rate Limit Exceeded",  "status": 429,  "detail": "rate limit exceeded",  "code": "rate_limit.exceeded",  "retry_after": 60,  "request_id": "req_abc123",  "timestamp": "2026-02-15T12:00:00Z",  "documentation_url": "https://docs.nobur.com.br/errors/rate-limit"}

{  "type": "internal",  "title": "Internal Server Error",  "status": 500,  "detail": "an unexpected error occurred",  "code": "internal.unexpected",  "request_id": "req_abc123",  "timestamp": "2026-02-15T12:00:00Z",  "documentation_url": "https://docs.nobur.com.br/errors/internal"}