{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "305605",
    "entityType": "User",
    "nonce": "0xd200022a6d9629f1030255239920d058b093675fcc552bb96ef2dd19f897ea47",
    "signature": "0x88bf3fde31f34c4961b35028185fc612839b76b3686f2ef2e7a2e39ba22400425e7e4c0b2f9c2ce69c7bc0391e2ff642046cfef86de0fea4240ada5c3b3938d31b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}