{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4397c00c1de1a43733b4a45383946a7d183dd403a8b1c3ce0158f296c83c8322",
    "signature": "0x179615f11a589e0f58b54ed405fb7ef50caf057f22ce288af54c6f9616e840c00a3de1386dd67e1a7df5f73e518985663d916ddd859fb20fb00df603b2bbd5811c",
    "signer": "0xfF3856c76E772eb9901df1edE6E84DC7e2C4Cd20",
    "userId": "950085558"
  }
}