{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "343",
    "entityType": "User",
    "nonce": "0xdb637b74e9dbe08a57927f901e0c7259899521a830024cf3f9059c947acaac5c",
    "signature": "0x8dca42878294f1ef1f7fb2889ac044698b220ddedab1b0172c5907406c2d9532172c3ee208cc1c61f25d59113314dff3037cb2e8e98685d45d03ecf7bdc1ee2c1c",
    "signer": "0x4950A7c498b6c214e83B79502162b7f248f9e6ed",
    "userId": "499895630"
  }
}