{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "402520233",
    "entityType": "User",
    "nonce": "0x6bcf3c8d7e2868b9231d4476b7c1fb004c6318e5b828a4d79c2dde34910b57cd",
    "signature": "0xd7bd9bc69ce691514176a81389535b3983cccba5c6919a0cf3125a3ca0311e5a2df5366522d856a329b3862d142ca1b2d85cf1a859e7bd724078da51277f4d3b1c",
    "signer": "0x9b6bD4505e2bCfA88acc8680F463a96DAddf1d0d",
    "userId": "213208842"
  }
}