{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xc72f010745d4144eef09331b169d843738807caaf44030864ec285de03e1e6de",
    "signature": "0x4024e82d85d7941954a750f8363fd0bb40ee7fe019b356b419f6a1b2034026a64145f0590261cd4f62b5c1a3c23c7ae65208c6c4139358bd82306cad4abad2051c",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}