{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "712556959",
    "entityType": "User",
    "nonce": "0x2528ebc5791738fc0426629d3c198494d51e96ef0137db56f6a99b15eb3ea9d1",
    "signature": "0xaff933fe639572096eba01d5ae1039ad85606c826afceee56d4d9f3ea0fd58177b591014819685269cfc542a31b236cdc4c6db60b6050527805dc50c5cbed10d1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}