{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "636236864",
    "entityType": "User",
    "nonce": "0x0364c77aaa9b5bc6b15ac6967cc46776e7a87b25f37050282221dba260e94401",
    "signature": "0x591b85fb232c97d869374e06384fa1c20e70d81c5364e6b13d145f60583411db0a47085294d2174233097db836511e22b2423999ad525833646f76d94e69baac1c",
    "signer": "0xA5fFfA5b8673Fb93490E3F9B0BeE58e1f0Ce1231",
    "userId": "508186998"
  }
}