{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x425ca49d64e96e39fb1ff63a440bb6533d5ac828ca4104790b58f12c9c6a85df",
    "signature": "0xb62032184e6268c7449be309de64c8a78b0ed8a0b09eb6cc3f7142617079f0fb53d5f9476aef6e6313e99fdf960ab37429750bf225c2f3b00b1205b8d42cb9051c",
    "signer": "0xcDb49ac8A1C9ABD916546340ba3855378AE0F8dB",
    "userId": "870228964"
  }
}