{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x99ed68c134c2d1b0f297509cc369ef7943f63f15a008598764d08eee40794bbe",
    "signature": "0x86227522fc3b85e97581f3d1c8bdeb5cebe60f7a920442d4e202a296613ccc235d4e8704bfbb7b47ef93f85ad09d2bd63aaa7f500219ea3683413c57af3414931b",
    "signer": "0xAcB0d7BF9562f1b7E47e8B21B8977EEf64Fa901A",
    "userId": "524597900"
  }
}