{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "755516",
    "entityType": "User",
    "nonce": "0x97ad7e1df1455a0d368b5595eed3baa217bd9c2caa1bc54f6a5f3d94e4506da0",
    "signature": "0xbf859b74bd9d4d5f29904e8184422078d54cddfa52b41d0ea8c8a41b06fccca228308d9742d39de1e50f1591221c5b76368773446574009a5a7a303ac05f35731c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}