{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "20",
    "entityType": "User",
    "nonce": "0xfffde691b5fadff213eb82c6bf8d14512da52ccda6d4fbf2a02cfda4e9621824",
    "signature": "0x481d5a88fea4f017c92fbf92d9e783adfdcfa5afc9145d8542efbfe3e003baab0c36495aed1c7a4dd15b5247dd58f599c5c913d65a9797e55eb6e395518a23ee1b",
    "signer": "0xF6F9F433Ab5dDe3c96D63C2fFAa64b610599a410",
    "userId": "80682"
  }
}