List an owner's skillsets

{  "items": [    {      "id": "497f6eca-6276-4993-bfeb-53cbbbba6f08",      "owner": {        "type": "user",        "handle": "string"      },      "slug": "string",      "displayName": "string",      "description": "string",      "isOrgDefault": true,      "items": [        {          "itemType": "skill",          "ref": "string",          "range": "latest"        }      ],      "createdAt": "2019-08-24T14:15:22Z",      "updatedAt": "2019-08-24T14:15:22Z"    }  ],  "nextCursor": "string"}

{  "defined": true,  "code": "UNAUTHORIZED",  "status": 401,  "message": "Authentication required or credentials invalid.",  "data": null}

{  "defined": true,  "code": "NOT_FOUND",  "status": 404,  "message": "The requested resource does not exist.",  "data": {    "resource": "string"  }}

{  "defined": true,  "code": "VALIDATION",  "status": 422,  "message": "The input failed domain validation.",  "data": {    "issues": [      {        "path": "string",        "message": "string"      }    ]  }}

{  "defined": true,  "code": "RATE_LIMITED",  "status": 429,  "message": "Rate limit exceeded; retry later.",  "data": {    "retryAfterSeconds": -9007199254740991  }}