{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "984215347",
    "entityType": "User",
    "nonce": "0x201a94db657f65ea5320daea510e4a6995dc45c4edeb1495357b5b93ad501ba7",
    "signature": "0x7766140e5d8b6e4def0b53a9176ccbdff20d415a9f61e0a4d55a1bde795a8d193a5fd9ec7e49b3b6f1582ec287329944ad66025369b7cb0321bf3ea8e176acf41c",
    "signer": "0x7Dcf59Fe46A27793E50Ef9EA330596f28F992c3f",
    "userId": "328612316"
  }
}