Merge pull request #82 from Relayz-io/silvestr/change-acc-id-to-pk

Change moderator_pk to Ed25519 pk

common-api/src/api.rs

 
 #[derive(Clone, Debug, Serialize, Deserialize)]
 pub struct Data {
-    pub moderator_pk: AccountId,
+    pub moderator_pk: Ed25519PublicKey,
     pub data: Vec<u8>,
 }