{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "657238987",
    "entityType": "User",
    "nonce": "0x5e6da53db1bb72fc326ba581f1b34dfbcc68a7c2ce14f32d75f463de5bfe98d4",
    "signature": "0xcd57826ddf50522d16f65753c0f73be521938e0d2607edf40eb1a3c0d28700463d577c18d3ce7a39466e3bd8a28d694aa36f695661db8d4b88db4ba5d6bad67a1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}