{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xdb56f1d1db2ad526f9be4cafcf02b35f9d238c81fbbc4908f46bfe3d963964fc",
    "signature": "0x74ff4754ea3bf52babe2492b9853bf51d1361f40d0ddf8acbae320f70338037116bad38e6d8da0bad40d35bf132bb9bd6cceedfdd8fb35ea78d3e50dd9e7ed711b",
    "signer": "0xe1eAe9Fa3Fef187944BA6cBa5C534e1ea257CA4E",
    "userId": "344552512"
  }
}