{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x816fb6be8c81030743f950378c263d5d1510483abd206fb6b83a7a33d1ba4b40",
    "signature": "0xbe2a43b889fc5a34a4757a035834f3699618bee68c33aa2a1b017c61b0a9975b7eaab6130232f539ad079df882c62003051f63f5bb3f473ba8f37ccae066f84f1c",
    "signer": "0x4e237945F8ca03f8f17F01906A08df7177d7E112",
    "userId": "495221181"
  }
}