{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x2829c97003ec49e5713b98253881c81a294a38a2ac92e01fa5333bfc69afa892",
    "signature": "0x4b5cf50c7da8e5bc5ab3297ea015f0434c1ccc4e7c5d56e6358bb9c8a68a4b817d624075bb0ea2f0aade251c5c20114652e5c2d5dfc9f2a9f55b843f2d9972541b",
    "signer": "0x4423Cdb579D12e175a3085B5F6d472D70968F1d0",
    "userId": "893719946"
  }
}