{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xced64f940890a5dcab5b1fef1e2447c871950a6f71383f37077c14fd83d7d231",
    "signature": "0xea31599dd0b943f2429c10eb93f8144e56bd23b654eec8b0e83054abdbd950ee75c4d03093450f3f71e3f5366fee70c6114cda3816b3d49b2cbc18cd7017071e1b",
    "signer": "0x81e63aeDEC1BBeD9C2059A571D087409726F8256",
    "userId": "866891598"
  }
}