{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b46661feb39814db449f1604f4fd6969ec81872a1000512575d778f23bff0c6",
    "signature": "0x46a7dc57eeb41f0214ed120831ffedc71801df2b8a620fa8b090d24711bdca1c3924307d37e0a544acaf0cd0467f05276653924f693af0e3bdddc2def86c76331c",
    "signer": "0xc36140849ffD1fc04BeFf9C460C8CCcA210536c6",
    "userId": "582390201"
  }
}