{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x3a334388043220ac88a5f8e0833aac9b4d71f7c1d0482c57b616f86dfa8867d5",
    "signature": "0x9f1d8a00374bf08be59e4eeb1fd0f6d9b6d139a81bd68902c1f1be91eb8e60ff0fc9521caf484929f9c9f7662ecf1f1d84f3e934f147c47447d8ffca081a918c1c",
    "signer": "0x14C737C213bB6958d32EbBD4Bc5F8A646FE47a7e",
    "userId": "292688438"
  }
}