{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1513",
    "entityType": "User",
    "nonce": "0x113da8e21026a35653850fcb70d5c8183f6e1788c9db6bcd05b7fd1c5df7538e",
    "signature": "0xd8210d1e36c335be96420c15f9451985a128b9e2faeced0bf93e271dc5d7b535073ac208b6b7141633dcc950967975551b746e611fba772e2d5f98804e412c501c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}