{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102143",
    "entityType": "User",
    "nonce": "0x6cb3b9581d3eac06213568dadcc71c5f8f52b1f3718d60158451e57aa1f6e672",
    "signature": "0x535d1933802af33a77cfc52875078dfae5dbc9f58cd12fc055afceb37cafe29e7231101eb40df1046d388a4989be8378f50a87c5966472e863ab1e0af500debd1c",
    "signer": "0x4D8EDeF47b57f98c89BDFf851267B0327BE4cD05",
    "userId": "5307724"
  }
}