{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "354435",
    "entityType": "User",
    "nonce": "0xe069e5bab9f6b896b155138ad220ac77db850a1517d8f7e39c71e6b9fcc74d40",
    "signature": "0x5af4e0961ac63c29e6e9a69c8608aaeb3d0352fc778d0d5ba34c394cfc3659b26d8447004e107f403c33ea065d6667bfa2cf057408aab76b2df273b38a4ef6f31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}