{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51815",
    "entityType": "User",
    "nonce": "0x64696c4c2e23058610d6cb5d3c22b9934f8ff0b5f213d2fb3fd0d22db7343778",
    "signature": "0xd3bba49192843bf94a0b63e291de83ac1867b220f4b3616bcf87decf1f46168c6d342fa6d029e97a56c25d2b8f7b2e4f9e4858e881e3ee9515c2922538ffc98c1b",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}