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Relationships : (NDWR/Monitoring_Sites_Groundwater)

{"relationships": [{
 "id": 0,
 "name": "Groundwater_To_Measure",
 "catalogID": "{3A6B6EF1-34C5-46F8-B939-ACAE97627FE6}",
 "backwardPathLabel": "Sites_Groundwater",
 "originLayerId": 0,
 "originPrimaryKey": "Site_Name",
 "forwardPathLabel": "Measures_Groundwater",
 "destinationLayerId": 1,
 "originForeignKey": "Site_Name",
 "rules": [],
 "cardinality": "esriRelCardinalityOneToMany",
 "attributed": false,
 "composite": false
}]}