{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x2196f091ed6787be3b54fa21eb1cff21c148cf0bf2f4360114fe85ab669a1533",
    "signature": "0x02696933265aa313367efd3dee6a39aa5bb9c7a3aa627c9018ec02560ed6958743d9c8f10d8115c7f7a0a54b8b6428572f3e177ac5027f47bf3a3e79ef618ba01b",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}