Enmax Load Capacity Query Response is an example object payload from ENMAX, with 9 top-level fields. It illustrates the shape of data this provider's APIs accept or return.
{"objectIdFieldName":"OBJECTID","uniqueIdField":{"name":"OBJECTID","isSystemMaintained":true},"globalIdFieldName":"","geometryProperties":{"shapeLengthFieldName":"Shape__Length","units":"esriMeters"},"geometryType":"esriGeometryPolyline","spatialReference":{"wkt":"PROJCS[\"Calgary_3TM_WGS_1984_W114\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-114.0],PARAMETER[\"Scale_Factor\",0.9999],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]","wkt2":"PROJCS[\"Calgary_3TM_WGS_1984_W114\",GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137.0,298.257223563]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",0.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",-114.0],PARAMETER[\"Scale_Factor\",0.9999],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]"},"fields":[{"name":"OBJECTID","type":"esriFieldTypeOID","alias":"OBJECTID","sqlType":"sqlTypeOther","domain":null,"defaultValue":null},{"name":"FEEDERID","type":"esriFieldTypeString","alias":"FEEDERID","sqlType":"sqlTypeOther","length":20,"domain":null,"defaultValue":null},{"name":"Description","type":"esriFieldTypeString","alias":"Description","sqlType":"sqlTypeOther","length":255,"domain":null,"defaultValue":null},{"name":"Phase_Designation","type":"esriFieldTypeString","alias":"Phase_Designation","sqlType":"sqlTypeOther","length":50,"domain":null,"defaultValue":null},{"name":"F_timestamp","type":"esriFieldTypeString","alias":"_timestamp","sqlType":"sqlTypeOther","length":2048,"domain":null,"defaultValue":null},{"name":"Capacity_Available","type":"esriFieldTypeString","alias":"Capacity_Available","sqlType":"sqlTypeOther","length":255,"domain":null,"defaultValue":null},{"name":"KVA_Number","type":"esriFieldTypeDouble","alias":"KVA_Number","sqlType":"sqlTypeOther","domain":null,"defaultValue":null},{"name":"Shape__Length","type":"esriFieldTypeDouble","alias":"Shape__Length","sqlType":"sqlTypeDouble","domain":null,"defaultValue":null}],"exceededTransferLimit":true,"features":[{"attributes":{"OBJECTID":3,"FEEDERID":"8-10.12","Description":"3 Phase Primary","Phase_Designation":"ABC","F_timestamp":"December 2025","Capacity_Available":"1,000-2,999KVA","KVA_Number":2999,"Shape__Length":9.1039235576969588}},{"attributes":{"OBJECTID":4,"FEEDERID":"25-14.112","Description":"3 Phase Primary","Phase_Designation":"ABC","F_timestamp":"December 2025","Capacity_Available":"9,000-10,999KVA","KVA_Number":10999,"Shape__Length":136.1630661173707}},{"attributes":{"OBJECTID":5,"FEEDERID":"25-24.123","Description":"3 Phase Primary","Phase_Designation":"ABC","F_timestamp":"December 2025","Capacity_Available":"\u003c 999 KVA","KVA_Number":999,"Shape__Length":44.2426706330752}}]}