{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x103f5052aa04ad445d9c3cfc13e1d36ffddfdc046059a5a50c900cff28b142bb",
    "signature": "0x9f8733f91f127ffcb47811623eb12eb83bf1d8e14fcf3f4d4e164f45da5c14d128472ea29c8f0b5dd5d4522b4d26317b74684f70155ad7b787aabb4fa41774ae1b",
    "signer": "0x585c1B957B5089B4e639fdD7D6b3913604Ac56bD",
    "userId": "52295307"
  }
}