{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb2963c06c7623dd12bf69bcd471b5768e38a6a490301704b3dee517e2f6b9688",
    "signature": "0x1c0bbb76f1ee7c8f1abbc50941b3b26dd71a4f8a55c2112e3323f3c9bf0f7d9d7ccdbc63615838b5b92e8902d1dad3404dd217aecbb2aaef3e176d7e442d89211c",
    "signer": "0x401225235d5AeCc31ddD1200b6A5597442b14a9e",
    "userId": "41709426"
  }
}