{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "139859",
    "entityType": "User",
    "nonce": "0x09a4ddac885bd92a8677a96f1dcdfcdce626329c49d4fcb14759ab389ea6b920",
    "signature": "0xac8a9bb64b373cd08e0059942890d35294ed8c4ddf3b8c568ae159a522e6628a2a363b2963793d7b82e06ccfc87ff41a04d3143edb876c18d9ad2507671c9e291c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}