{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456251496",
    "entityType": "User",
    "nonce": "0x40366a6a53d1505b5976d0c3570ac38d165feb4c0c17c67c6e8cea44cab5714d",
    "signature": "0x045405984472748d01e5d857da64695f7c85108f328c2fa7fdb5b5d44c8f83762cb628f340d78bcd2f9016c91c1ea5c628ee0c5371b0612c86b4c5680f4b9b3b1c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}