{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1440255",
    "entityType": "User",
    "nonce": "0x2f391685fb9e7db193be4cf5d2fe0daa2b2f9da5b63fd4ec6d6f5c8b8c4e768b",
    "signature": "0x1f394cf5ab87ef6427e2493049b2617611b19ccd523039a08609835ef7f25b12703d894873129e48427e955357f14900262b6d41a0be10738c9989a4f8337c081c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}