{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc6313d3999f0abf3c32cfcb7f956797773eaad506e62914542705b89b60dd085",
    "signature": "0x597973cb7ab69951ef268013e43c864b185c60948d3a9f0ee9d56b334978cedc7832df7387874c304d5cc398e3265eb0524f58ac4dfb3d716817410cba3e7dc11b",
    "signer": "0x197d39f11BC92Ab9BCe49DEd40093f8c1D72B802",
    "userId": "455947464"
  }
}