{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "53471",
    "entityType": "User",
    "nonce": "0xe2b51bf2bdc03f21f027bf887572e8de1c7e22f54fd716d28517a376e6ea7c35",
    "signature": "0xd7bc681cf9c5095ed90b38f848d6fe5c72b5e49fc890099cd7aadc392f92792906a407c3fc2362c55a1685649050f40aa77a35fb8a7b8f37f2b83d68480220751c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}