{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xf5b28c3acf39dc8c71b3b8d7d3b8332bb5d88ed7a4564e8825ecffc36ed5fa04",
    "signature": "0x1737c262506adc24b657b6299521d30a22f08610d2068f79df347226f02a73e809f284d7132bfea86bf079c10b1222fc81021f68fbc56ff815278091b5145f3b1b",
    "signer": "0x37aa003D06B605532fc5fe8aDa0D7D118889f5Aa",
    "userId": "158756861"
  }
}