{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6c99867cf2c2b4a10dafdd7d9e540cbfd55d34d0358721eaa7d2ea85b2832515",
    "signature": "0x50fa3f1056f1c160a2f4f078b34022a279cf4166066b174bd6f2595f9ec5043303825e407b09e32907f0f71b4bcfefe9e690ed8ed5cece3a13add491fb80630e1b",
    "signer": "0x6B8f1fA543A03f3fE0C21b80d7f9d0eE451357c7",
    "userId": "284338928"
  }
}