Enmax Service Area Query Response is an example object payload from ENMAX, with 8 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":{"shapeAreaFieldName":"Shape__Area","shapeLengthFieldName":"Shape__Length","units":"esriMeters"},"geometryType":"esriGeometryPolygon","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]]"},"fields":[{"name":"OBJECTID","type":"esriFieldTypeOID","alias":"FID","sqlType":"sqlTypeOther","domain":null,"defaultValue":null},{"name":"Type","type":"esriFieldTypeString","alias":"Type","sqlType":"sqlTypeOther","length":50,"domain":null,"defaultValue":null},{"name":"Link","type":"esriFieldTypeString","alias":"Link","sqlType":"sqlTypeOther","length":250,"domain":null,"defaultValue":null},{"name":"Link_2","type":"esriFieldTypeString","alias":"Link_2","sqlType":"sqlTypeOther","length":250,"domain":null,"defaultValue":null},{"name":"Shape__Area","type":"esriFieldTypeDouble","alias":"Shape__Area","sqlType":"sqlTypeDouble","domain":null,"defaultValue":null},{"name":"Shape__Length","type":"esriFieldTypeDouble","alias":"Shape__Length","sqlType":"sqlTypeDouble","domain":null,"defaultValue":null}],"features":[{"attributes":{"OBJECTID":1,"Type":"Outside ENMAX Service Area","Link":"https://wherestheline.ca/contact-us","Link_2":null,"Shape__Area":662400535892.35364,"Shape__Length":4124926.6274375031}},{"attributes":{"OBJECTID":2,"Type":"Inside ENMAX Service Area (excluding downtown)","Link":"https://www.enmax.com/services/electricity-services/get-connected","Link_2":null,"Shape__Area":1082760016.7670803,"Shape__Length":180511.19524514573}},{"attributes":{"OBJECTID":3,"Type":"Inside ENMAX Downtown Network Boundary","Link":"https://www.enmax.com/ServicesSite/Documents/ENMAX-Network-Servicing-Policies-and-Guidelines.pdf","Link_2":"https://www.enmax.com/services/electricity-services/get-connected","Shape__Area":6679763.3948936462,"Shape__Length":17184.713776718934}}]}