{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "330245235",
    "entityType": "User",
    "nonce": "0x64145c6b46521c56923d971c02cf8a18e620164ae8f4ba166a752faa700fe9fb",
    "signature": "0xd8b9714270da77d1655b3d72f7b7bf467a6344460042b923428992d6b86390585a9ad96dc030fbff34522b68b88b205fad6507c73072a8b88c93033a69a0982e1c",
    "signer": "0x5D012C880480A2E1ab4345f6F374CFf73e040331",
    "userId": "10449019"
  }
}