{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "837713671",
    "entityType": "User",
    "nonce": "0x203f5645a7e7930602106b84f6ba1d3d23e1d4b5d859b061ce118bbbd9de6c3c",
    "signature": "0x784c441868c5fe4c5acf308e0d82534f34d03f079875c4b3ffb3cd592c2ec01159a9a161f62232abab9ad492fc531824ef180b988fbc5a85b70548d9e4b11da11c",
    "signer": "0x044FC5a5dDb09Fd969Ac4aa606CddF360FE384dC",
    "userId": "144585121"
  }
}