{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50672",
    "entityType": "User",
    "nonce": "0x6bb085c20191129dbede286b8ada1185be5e211c89f69dcf778d7480b20c851c",
    "signature": "0x574df24c3c856f87af70ae2b4eca3906498bedff39f9c85bebb3f441e9cbd01c3a702ba71efb1e6acee2dad17cb88bce24617cdd139105f9ae03eaa2709efc711c",
    "signer": "0xA7e5b3c6d06C38A408547F8fd01d4745C2E728Ae",
    "userId": "601241019"
  }
}