{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x56b9cbe337fea89e740ab32be9c3b725f2e45c529bd4397d61a1522187418786",
    "signature": "0x3f3529e61df40cd4f4616b2f980615293cf94b983e7d25857675a92bd72a4ec65e3c6a49ffaea915bcd1f74bb432380ec0129259c3b191f70d28630e1012fb2a1b",
    "signer": "0x243776e8EeC94c1e35e1c0b98d022b03A9f35934",
    "userId": "28720214"
  }
}