{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "154080",
    "entityType": "User",
    "nonce": "0x1f12d4b4ee704e41cb51d26c022921af4bbc91831697310d9faa48d085f2efb4",
    "signature": "0x856ec0a56e5ee6edcb6c44db162f5822a3fa92753fef4506e399cf9291112e6978c4fb5c8e98f8e6b8f0fa3062a84291692b4abc084bb8fea396a980a353fc8c1b",
    "signer": "0x604b4F353E759e6Ceb980b2Fa04e96FE85AC7d1D",
    "userId": "235338"
  }
}