{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x280d5fc7433d5d775533d1d71d8c5b75109c41f1a4fb4f926a8672960c2f4dbd",
    "signature": "0x33d0f8b0ba1aad11956c352737309727609275f1267ac7daadd46742651a72ec70be8afcb8a63a5d4a4d25e9ce033f646ce7a77b43736c2631cf4b2aba9ba0ca1c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}