{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x551491dd6ec2b6a72e4bb81876eaa96ecca38a063eed3fb866f84808987c3287",
    "signature": "0x6aef50b711b5c8735679bb291098c34e853b1ce99807a80a403d3cad12a548ef7eddce306f07d9549492bf1ffc676d7dbf0a4a3664b14704e4bd906b28a1c48d1b",
    "signer": "0x5823e56644991c5f5f29870830175996Edb011c0",
    "userId": "433764837"
  }
}