{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x128d1d04d6712674dc7fa4fb8ad60b1f4b64579e00f8164c0da6b75e72ec5269",
    "signature": "0x5ea15f5405d5bcca254b36b3415b686d2af8d8a713a207af2f0c4159f281f488377500147f3e3aca22a0026428c17746d5b581dcf05bd543db0839ed366295ae1c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}