{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1624ff88f598a407e42508261981fed8c0e96a20bb51749efbb4c064f66bed12",
    "signature": "0x6da92e1d3bd94ca3f80b603f5b4601790a2c7dc49f3273d7bf657835628ad0400129a670e5c44b5d48fa61a6fd4ca14fae0ce1e4984dcde200e12c9805844f861b",
    "signer": "0xEB85867F957F2FE571521B2EEdBEF6FB4Fd9FA42",
    "userId": "440680049"
  }
}