{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "871929900",
    "entityType": "User",
    "nonce": "0x3bffeabce5d57e77114e726f667e12b4637235d5fe029d4de4b8af7e06566d11",
    "signature": "0x8c4e226022dab4fdb3f80c2d1140d1d2adb78d4ccb54ad55748e9043eded6b6d72c3fda861369172d82575d3d0dc7f76786f0ea6b24dba001e6adbcf14159ca31b",
    "signer": "0xD71D6a61b797d5436c8d291306fd7DbCe6257Cc2",
    "userId": "117522"
  }
}