{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "44142994",
    "entityType": "User",
    "nonce": "0xb132b322de38ad6a3550077ee5fb1926e494029001f1d7b889ec5c2bf5d39579",
    "signature": "0x1aa64d838773c5dd864f73b82210685cda52ae29be1c9721118ac56a964d6b941901ec8007ef999ff9f64c7ee285a33c7bc4dd96ebc1fbaa9bbcbeb925e203ee1c",
    "signer": "0x13f8ca0832087662A9bA298e1F708853B8615826",
    "userId": "990836999"
  }
}