{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "708077815",
    "entityType": "User",
    "nonce": "0x071ce5ca06454189b50b8dc460feb67ec0621c139fc24732e579233316fd8d30",
    "signature": "0x2ec328ad2b2315f127b1aaa84b7bf3c948c34a59891f4442f6f7bbcc0b3e80c414713530c0638eaf047f2bd02e1725d418aaccc944b8e1e0b29857d8213fb4c21c",
    "signer": "0x6068Da6B0a791A756931bE32de98D46eBb95890c",
    "userId": "475275462"
  }
}