{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe93f8bd72cbab1e1119cc1ec9ddd07e2eb4ee611a84763770d8e1b8c8165688d",
    "signature": "0x570c0322776a6a550b2ace9be7ee707b43ccbf0a8b3339f3c17e1e08b10952a446078e950a25f9cd44ab94e10948624c71368ed6af3e39f4d2a52cd2db72f39e1b",
    "signer": "0x163b9B0b80794FC27cb6C3f9225546C1eFC9aEf7",
    "userId": "405314550"
  }
}