{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "263967",
    "entityType": "User",
    "nonce": "0xf4dbe281f42f81d086cab639e288fab71ea0df5e942a4f45c94906dfc8a9057c",
    "signature": "0x1c5eee2aeb74cfef2a06389f54467e1aa164fcaa249203bdac5ab4aad4f8e674716bd8a56427492a57c68d12094b45b4b001bb75ea114895dcb8e7710ced4ee21b",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}