{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54498",
    "entityType": "User",
    "nonce": "0x54d4a92bc98a1676eaea9903527add2af54b931853f2a1ede2d007b8b90c588f",
    "signature": "0x1c37f11a0f4d6bfa45d15b1f4957a854755c0b5207c1e7849b017d4a9b891c977c2f7a2a4149ea4f5958e39e68bfd108d51bc35742f457f015021eaa923c45b51c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}