{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa3fd4089055d08a34452d09ec33ae0966b1a5961f86d49b015da84864c553adf",
    "signature": "0x4e320a5ebc1745f198409b42c6882c58ba5a4108a3006279b6a60b29ba0439950485fadc7c785f9f734929ae75d7ea932a0b9034ceb81b96e5d76c1f5087db091b",
    "signer": "0xBD9646b3F709697468041872EEB6d53c3EDaccfC",
    "userId": "754769888"
  }
}