{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x9e1e6837b0656d8e5a2d11fe7ee9c5489797b1e614b92a668ab53e9ab946d640",
    "signature": "0xf53d7fdda431c2c3bb48399ef1478a14d8eb5ea9edb65b031dbaad8df7ba96a23d2bc377e8b15b549abbe5f02572e9a99259b058cd952266b5f1117a544303251b",
    "signer": "0x5f0888943c5151AD92380E0b8bae6e39110f041E",
    "userId": "837012197"
  }
}