{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "200080308",
    "entityType": "User",
    "nonce": "0x51501cffbaefd1ef32490a2c9459cbf07554729740e37286044756edace47121",
    "signature": "0x52f646681fbeaf79ae0e827b1cd6b1635b08aef373df1fb7cb7b046fb7d05f356a3603b716f9abdb57b87b2f8870c020509e94f61fb677e369f1995275509d551b",
    "signer": "0xad12A53B30a86D04715B5663c5832Df6E2Cb9710",
    "userId": "980941"
  }
}