diff --git a/.github/workflows/playground-check.yaml b/.github/workflows/playground-check.yaml
index b61a6cb832..b19c9b6836 100644
--- a/.github/workflows/playground-check.yaml
+++ b/.github/workflows/playground-check.yaml
@@ -14,6 +14,9 @@ jobs:
       - name: Install dependency
         run: sudo apt-get -qq update && sudo apt-get -y -q install curl jq
 
+      - name: Install Foundry
+        uses: foundry-rs/foundry-toolchain@v1
+
       - name: Setup environment
         run: |
           cp playground/.env.example playground/.env
diff --git a/playground/test_playground.sh b/playground/test_playground.sh
index f34ed1574b..75c39630a8 100755
--- a/playground/test_playground.sh
+++ b/playground/test_playground.sh
@@ -9,8 +9,9 @@ set -u
 HOST=localhost:8080
 SELLTOKEN="0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2"
 BUYTOKEN="0xa0b86991c6218b36c1d19d4a2e9eb0ce3606eb48"
-RECEIVER="0x3C44CdDdB6a900fa2b585dd299e03d12FA4293BC"
+RECEIVER="0x94766c15b0862Dd15F9f884D85aC1AAd34199a5f"
 AMOUNT="1000000000000000000"
+PRIVATEKEY="0x93de76e801fcc65f0f517c3ca716bfc49a83a922ede9d770dd788e9e47d14f60" # cast wallet new
 
 # Run test flow
 
@@ -40,9 +41,59 @@ buyAmount=$(jq -r --args '.quote.buyAmount' <<< "${quote_reponse}")
 feeAmount=$(jq -r --args '.quote.feeAmount' <<< "${quote_reponse}")
 #echo -e $sellAmount"\n"$buyAmount"\n"$feeAmount
 validTo=$(($(date +%s) + 120)) # validity time: now + 2 minutes
+#order="0x"$(printf '%s' "$quote_reponse" | hexdump -ve '/1 "%02X"') #"$quote_reponse #(jq -r --args '.quote' <<< "${quote_reponse}")
+
+echo $quote_reponse
+
+# Filter out unneeded fields
+order_proposal=$(jq -r --args '.quote|=(.appData=.appDataHash) | del(.quote.appDataHash, .quote.signingScheme) | .quote' <<< "${quote_reponse}")
+
+# Prepare EIP-712 typed struct
+eip712_typed_struct='{
+  "types": {
+    "EIP712Domain": [
+      { "name": "name", "type": "string" },
+      { "name": "version", "type": "string" },
+      { "name": "chainId", "type": "uint256" },
+      { "name": "verifyingContract", "type": "address" }
+    ],
+    "Order": [
+      { "name": "sellToken", "type": "address" },
+      { "name": "buyToken", "type": "address" },
+      { "name": "receiver", "type": "address" },
+      { "name": "sellAmount", "type": "uint256" },
+      { "name": "buyAmount", "type": "uint256" },
+      { "name": "validTo", "type": "uint32" },
+      { "name": "appData", "type": "bytes32" },
+      { "name": "feeAmount", "type": "uint256" },
+      { "name": "kind", "type": "string" },
+      { "name": "partiallyFillable", "type": "bool" },
+      { "name": "sellTokenBalance", "type": "string" },
+      { "name": "buyTokenBalance", "type": "string" }
+      ]
+    },
+  "primaryType": "Order",
+  "domain": {
+    "name": "Gnosis Protocol",
+    "version": "v2",
+    "chainId": 100,
+    "verifyingContract": "0x9008D19f58AAbD9eD0D60971565AA8510560ab41"
+    },
+  "message": '$order_proposal'
+}'
+
+# Validate if json is well formatted and compact it
+eip712_typed_struct=$(jq -r -c <<< "${eip712_typed_struct}")
+
+# Dump to file as there are some spaces in field values
+echo $eip712_typed_struct > tmp.json
+
+# sign quote_reponse with private key
+signature=$(cast wallet sign --private-key $PRIVATEKEY --data --from-file tmp.json)
+echo "Intent signature:" $signature
 
 echo "Submit an order"
-orderUid=$( curl --fail-with-body -s -X 'POST' \
+orderUid=$( curl -v -X 'POST' \
   "http://$HOST/api/v1/orders" \
   -H 'accept: application/json' \
   -H 'Content-Type: application/json' \
@@ -53,13 +104,13 @@ orderUid=$( curl --fail-with-body -s -X 'POST' \
   "sellAmount": "'$sellAmount'",
   "buyAmount": "'$buyAmount'",
   "validTo": '$validTo',
-  "feeAmount": "0",
+  "feeAmount": "'$feeAmount'",
   "kind": "buy",
   "partiallyFillable": false,
   "sellTokenBalance": "erc20",
   "buyTokenBalance": "erc20",
-  "signingScheme": "presign",
-  "signature": "0x",
+  "signingScheme": "eip712",
+  "signature": "'$signature'",
   "from": "'$RECEIVER'",
   "appData": "{\"version\":\"1.3.0\",\"metadata\":{}}",
   "appDataHash": "0xa872cd1c41362821123e195e2dc6a3f19502a451e1fb2a1f861131526e98fdc7"