diff --git a/packages/cli/src/PublicApi/index.ts b/packages/cli/src/PublicApi/index.ts
index 19681e798d8fe..b416b865104ce 100644
--- a/packages/cli/src/PublicApi/index.ts
+++ b/packages/cli/src/PublicApi/index.ts
@@ -64,6 +64,17 @@ function createApiRouter(
 					validate: (identifier: string) =>
 						validator.isUUID(identifier) || validator.isEmail(identifier),
 				},
+				{
+					name: 'jsonString',
+					validate: (data: string) => {
+						try {
+							JSON.parse(data);
+							return true;
+						} catch (e) {
+							return false;
+						}
+					},
+				},
 			],
 			validateSecurity: {
 				handlers: {
diff --git a/packages/cli/src/PublicApi/v1/handlers/workflows/spec/schemas/workflow.yml b/packages/cli/src/PublicApi/v1/handlers/workflows/spec/schemas/workflow.yml
index c15ce8120b566..bac8120af854d 100644
--- a/packages/cli/src/PublicApi/v1/handlers/workflows/spec/schemas/workflow.yml
+++ b/packages/cli/src/PublicApi/v1/handlers/workflows/spec/schemas/workflow.yml
@@ -33,9 +33,14 @@ properties:
   settings:
     $ref: './workflowSettings.yml'
   staticData:
-    type: string
+    example: { lastId: 1 }
     nullable: true
-    example: '{ iterationId: 2 }'
+    anyOf:
+      - type: string
+        format: 'jsonString'
+        nullable: true
+      - type: object
+        nullable: true
   tags:
     type: array
     items: