{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x1347b08465f53addd805e2512eb28b250e884589efda3fd22d59f2d6d73b1d02",
    "signature": "0x277c8138e1c0c61228d5e439b65d1802e294c8989b95dce4b500c062b208d09863c5ff3de824cc766913783f6a6fefcec73940efd2404b38b6a75e4afcbbffe31c",
    "signer": "0xd640e9665a97D18b7ec9266e82c55Cc25CAF55A5",
    "userId": "971562205"
  }
}