{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "991821949",
    "entityType": "User",
    "nonce": "0x41b8bafff739e95ba9262841d7980716011afb4f18679ece77adb5d892093140",
    "signature": "0xb7e376ab23290aba29acf34ec123fb760efac981d35a0c9fe4cbc4031dc3ef1c0342db200cce1a2c3926a23e496915f71a5b4c429f347f288c712bd79742b3681b",
    "signer": "0x4D1242D0da3f49195E59794290Cbfd833cCD04FF",
    "userId": "627952347"
  }
}