{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x064fb5f02db6df332d451fffb8bf5f9647b7ac9b9f8974e5521882da6f2675f2",
    "signature": "0x2315a7c2bfa3743108560147f37a0358b5f35ad8884473fbb83064153e7b374d76cb1acb5c2edbd8ab11d25a8a5f129a9dc69c7574cf2a128fc814665a5e454f1b",
    "signer": "0x639B9598C075dEDFE2d8FfB1B5B6ca259D3C425E",
    "userId": "667809204"
  }
}