{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "10",
    "entityType": "User",
    "nonce": "0x6a1fa4ceb59ef40d8ed11db0fd59e0544c041c4a7273be8f77a8c74ed1053222",
    "signature": "0xe283c2ec2c19467ed9fba6a172f83fceeffbe66161b525dc8e591c380f3024fa359435d52183060681dba69193de510bed80fe8e287c44987427c9e8aecd666e1b",
    "signer": "0x40E8E224E8F8a9f835e4dc8851Da72DCEd75986F",
    "userId": "504092010"
  }
}