{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "352613",
    "entityType": "User",
    "nonce": "0xd9c523f8f8887d8c20dae1ae5ff73e206c0e6ed8afd5f27d4e52d2a9505b8543",
    "signature": "0x54bc8cd74b81e750613bf5327474823eb034ad6ecd5583cdf39ffb987fb5b6cd69b9334bf79772e7bb6a002692a78dcaed2d9682f3548e3dcb3b8ec0466c9a621b",
    "signer": "0xbe916820AF010608151C80f3A74F7c83218094B2",
    "userId": "881446128"
  }
}