diff --git a/pkg/engine/inmemory/morph_storage.go b/pkg/engine/inmemory/morph_storage.go
index 72b5439..ea31136 100644
--- a/pkg/engine/inmemory/morph_storage.go
+++ b/pkg/engine/inmemory/morph_storage.go
@@ -52,3 +52,11 @@ func (s *inmemoryMorphRuleChainStorage) ListMorphRuleChains(name chain.Name, tar
 	}
 	return nil, engine.ErrUnknownTarget
 }
+
+func (s *inmemoryMorphRuleChainStorage) GetAdmin() (util.Uint160, error) {
+	panic("not implemented")
+}
+
+func (s *inmemoryMorphRuleChainStorage) SetAdmin(_ util.Uint160) (util.Uint256, uint32, error) {
+	panic("not implemented")
+}
diff --git a/pkg/engine/interface.go b/pkg/engine/interface.go
index 66afff1..fa38737 100644
--- a/pkg/engine/interface.go
+++ b/pkg/engine/interface.go
@@ -93,17 +93,27 @@ func ContainerTarget(container string) Target {
 	}
 }
 
-// MorphRuleChainStorage is the interface to manage chains from the chain storage.
+// MorphRuleChainStorageReader is the interface that provides read-only methods to receive
+// data like chains, target or admin from a chain storage.
+type MorphRuleChainStorageReader interface {
+	// ListMorphRuleChains just lists deserialized chains.
+	ListMorphRuleChains(name chain.Name, target Target) ([]*chain.Chain, error)
+
+	GetAdmin() (util.Uint160, error)
+}
+
+// MorphRuleChainStorage is the interface to read and manage data within a chain storage.
 // Basically, this implies that the storage manages rules stored in policy contract.
 type MorphRuleChainStorage interface {
+	MorphRuleChainStorageReader
+
 	// AddMorphRuleChain adds a chain rule to the policy contract and returns transaction hash, VUB and error.
 	AddMorphRuleChain(name chain.Name, target Target, c *chain.Chain) (util.Uint256, uint32, error)
 
 	// RemoveMorphRuleChain removes a chain rule to the policy contract and returns transaction hash, VUB and error.
 	RemoveMorphRuleChain(name chain.Name, target Target, chainID chain.ID) (util.Uint256, uint32, error)
 
-	// ListMorphRuleChains just lists deserialized chains.
-	ListMorphRuleChains(name chain.Name, target Target) ([]*chain.Chain, error)
+	SetAdmin(addr util.Uint160) (util.Uint256, uint32, error)
 }
 
 // Engine is the interface that provides methods to check request permissions checking