{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x84cfcc862ee7dc9c88f2cf23e25d28b59b42775228f2b7254c5175ccc19893c2",
    "signature": "0x51023694adfc3f3cddb5989eec1d81e58c26c3afde0a29f501f14add7b9bb6a17a4974f729a23090128afee72ced2c01bef20387f501748bb40bb6075e5332411b",
    "signer": "0x99495e01D85fa00CC970388cC563cb31e0968F8c",
    "userId": "973821285"
  }
}