{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9736612741e6a3b84251976065fd2e88c2a9c7edc5181bea5c2753c9aa5d5a26",
    "signature": "0xd867118a9f2ed5f16a8d8c38af8ba8db7b9223558c63587c753c25544393cc6d5dfdccc4fec9af30e5b458ecb166c62ef13836d89a455f2059b5225c828a114e1c",
    "signer": "0xCe28dce78A73b5c96c01000780576613c0b7Cd47",
    "userId": "300284320"
  }
}