{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "781543844",
    "entityType": "User",
    "nonce": "0xc272660210722a3019ab6f109e722386d8e80f399c0102839a8c358b0955a5ff",
    "signature": "0x7c4a91b62f1de82989b4d277be482cd91ee242319dc0aa256449e63638832033335c56656e6d2da0ee66267e01a26b1fe1aa8d3f8da50fdbb2eb668771c875261c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}