{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "400171089",
    "entityType": "User",
    "nonce": "0xd01d68eb31ac79edf2b30181e6244ba5debd357478a06f3ffeaf871f18223486",
    "signature": "0xcedf200cccb44500b9294a0e83c1bf5ba7461956a4d94de86b12fb18fdbaa8dc2aec04edd5a98145f3b915ccdf13d8da8c6b709fd32bdafa0cdcb72a9b0985d81b",
    "signer": "0x8bd5c03298238332f393D0373090CA1b27A78DC1",
    "userId": "362760707"
  }
}