{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "199502",
    "entityType": "User",
    "nonce": "0x1f120933275038b7cb73dab4de52f3c586d237a2d65673d08b451c284d877b0b",
    "signature": "0x0396e1562010177cede55ad765ba83335279f8ebc337e6a67c95c25795fe726955ba745ac5ada0225ed930b82f5df9c2b18484a30f59f8a59078a0e1b0c041841c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}