diff --git a/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/examples/enableSubscription.json b/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/examples/enableSubscription.json
new file mode 100644
index 000000000000..eb3b770d1e8a
--- /dev/null
+++ b/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/examples/enableSubscription.json
@@ -0,0 +1,13 @@
+{
+  "parameters": {
+    "subscriptionId": "7948bcee-488c-47ce-941c-38e20ede803d",
+    "api-version": "2019-03-01-preview"
+  },
+  "responses": {
+    "200": {
+      "body": {
+        "value": "7948bcee-488c-47ce-941c-38e20ede803d"
+      }
+    }
+  }
+}
diff --git a/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/subscriptions.json b/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/subscriptions.json
index 44af72308790..a374aa242204 100644
--- a/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/subscriptions.json
+++ b/specification/subscription/resource-manager/Microsoft.Subscription/preview/2019-03-01-preview/subscriptions.json
@@ -84,6 +84,39 @@
           }
         }
       }
+    },
+    "/subscriptions/{subscriptionId}/providers/Microsoft.Subscription/enable": {
+      "post": {
+        "operationId": "Subscriptions_Enable",
+        "x-ms-examples": {
+          "enableSubscription": {
+            "$ref": "./examples/enableSubscription.json"
+          }
+        },
+        "description": "The operation to enable a subscription",
+        "parameters": [
+          {
+            "$ref": "#/parameters/subscriptionIdParameter"
+          },
+          {
+            "$ref": "#/parameters/apiVersionParameter"
+          }
+        ],
+        "responses": {
+          "200": {
+            "description": "OK. The request has succeeded.",
+            "schema": {
+              "$ref": "#/definitions/EnabledSubscriptionId"
+            }
+          },
+          "default": {
+            "description": "Describes the error if the operation is not successful.",
+            "schema": {
+              "$ref": "#/definitions/ErrorResponse"
+            }
+          }
+        }
+      }
     }
   },
   "definitions": {
@@ -121,6 +154,16 @@
         }
       }
     },
+    "EnabledSubscriptionId": {
+      "description": "The ID of the subscriptions that is being enabled",
+      "properties": {
+        "value": {
+          "description": "The ID of the subscriptions that is being enabled",
+          "type": "string",
+          "readOnly": true
+        }
+      }
+    },
     "SubscriptionName": {
       "type": "object",
       "description": "The new name of the subscription.",