{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a00be06b8f6287995919479e60fed570ef8acc752e5dcb20c2ee6503d2138c4",
    "signature": "0x6566ef89465b6d3cc333505109f93229fa844bba6b20a37dc292649da9f4881b7e24b6d288e3eb602c88ff3ce67cdc24fd3a622a7a96b15a00f3de361c7122461c",
    "signer": "0xA3d18b0B53fcFF7d4186971f5c63C2c2e9746433",
    "userId": "850008333"
  }
}