{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0027863d81b3ac015980be656be94ded794445916c50f3ef01ae6b84bb2787fa",
    "signature": "0x54dbfb8ecfefc0a0fee8476f8d516be8b61a85224025cf40cf87b807d8108c7b15773d58683939d90bec50d8fb8d5fc1c162af8f18114f80612aef0e194e6aa61b",
    "signer": "0x73a4AEb5e62D49bdDf13dc43A4745a3FA0B363A7",
    "userId": "528079075"
  }
}