{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x42610b5a5a8f5090f7f3b5e33aa07ef8e4c8e0224bf80df0b7cf76fdf3f5168e",
    "signature": "0x3af729cae9c2c8a8c89a2daeeec91048db13955cb1000db4e34a498642ea84430a628731e5b63c662ccfc763f4a8c41685ea1bb1881e8f958c7f48bc7e74dae31c",
    "signer": "0x4D952865cC00a6062FCaD842d4bc9504228df1F2",
    "userId": "988592810"
  }
}