{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9a0cbb1dad2cd943e733a2ab733b3c58cbcf4663431b3b4a6a9a30140b2ef2bd",
    "signature": "0x49627b6c80b3ac42852e03e51a96690284597d9e213bb219890a897b27ab00fc4935a4a90faed3e27e3ca9f71319179b9a4108cdbdf1f7756f8af02b1c99c6cc1c",
    "signer": "0xaf2833903B984aD010e7989E1eBe65802E606ab9",
    "userId": "139430223"
  }
}