{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "48341",
    "entityType": "User",
    "nonce": "0x49bcf0695a1995abfdc8b7b3543b2dbe967f62ee555700805f6330e945a614e4",
    "signature": "0xa4d5cc57e713d75fb4468d96a795fcd1dbf704d4901d4cf68464b295f6e6d8081de9011be15a7320e04b76990b363e7e4b3a27a781242c1a5276447549a03cc41c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}