{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x556bda09b4cab119b8c6177298f9234a77b242428d00922d5e681db63c9d4990",
    "signature": "0x889d1236acadbc4d8bf3108eb1b853c67cb7fcf4f9ae75cba4609343dc18f62352c69d0af520baf1f50e7676ab5fd624e053a9d0f8035e2b33957b8a2747d51c1c",
    "signer": "0xEFAB3332CD5EA33e9817aa57B32CaCb8Acf973A4",
    "userId": "407216161"
  }
}