{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "901788935",
    "entityType": "User",
    "nonce": "0x9d130b9686d69400e5416cec10011a448840440238f0826186369b8daef14c6a",
    "signature": "0x694cfbf0c7559a6c1ed83dc626a22a0ed7569df967c33c9ff389af358c11b9927005fd2abaf013dffaaea45da6abf5d4b23efab9f6a5817b83975ac4ae0d93521b",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}