{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x400e87d19902e327906279dd0b91a77facfe2c52cfa4f088562e9a3be3c62f63",
    "signature": "0x7d9191949cb6e75976fee0060394a959ccfe5aec30b95d9b43adad3e368457c067b60bb17263b8c09eace63a06c4ebbd4439f6639f86bb5e6fb8eeb54e6903121c",
    "signer": "0x9f5896C078219d89B9A5D8B9C381b7be8BEf4CFA",
    "userId": "56704236"
  }
}