{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb920e14aa4858d9d73c9c1c0a086c937f02672667b31daf33d60c52669285ba8",
    "signature": "0x39de33f029398889217c3ae88b6a8250ce38189baadcfe9905d89a21cd381793423eb2527b2d2a8b183264938a01d2be66921b846e918d8e6fdc9e014ed2b9351c",
    "signer": "0x1b457e4aE000600a3594385492A8F88Ce403c1a7",
    "userId": "119194724"
  }
}