{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "54353",
    "entityType": "User",
    "nonce": "0x7756ca7d1d7e639c14ded1a9ad31365bb4bc5e03e25358811d2ce21c068f6716",
    "signature": "0xd578210d611c6fb547d56e0bbc7d13d5b1a5b774324d1d908119ed42f2c9d5bc4a8fc81b253a3ddb2df680308a632ed839ce73998e0e7f928037734fbc0fc58f1c",
    "signer": "0x793bbEFbb3Cf1e6529B90296e502145aCcCDE8d6",
    "userId": "838777725"
  }
}