{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xc66138f64f3edd31ce303c9b0aa72de3c8617feac16325365336344bb81e0dff",
    "signature": "0xf8f951a8daac7bb361ed65cd20d9ee437e58eac7a41ec9b7802bdab63e22718b56c15880bf700a29fa03937b18c9fa65a1ef1ab9022168728222202142c870db1b",
    "signer": "0x3A8886266000f8EE9c2710f26D48Fe779Ea52121",
    "userId": "530486745"
  }
}