{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "40651",
    "entityType": "User",
    "nonce": "0x4d1642da28579ac7ece4dca5c251b50d9aaf5960e1d619044d3e17000fb43f78",
    "signature": "0x62eaa7429cb827604ed1fcd194d92ed790f60613841cff4702977286a1644e8e226a06cf18d19b6fcb073bdebbac05aaaad319061f7d91ae074396c046b3dec41c",
    "signer": "0xE4c0c73a0c0CD7f65f1bE942f8127c8753aB89D9",
    "userId": "857284925"
  }
}