{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12",
    "entityType": "User",
    "nonce": "0xbba57428967ed21a21639cdbb2881cebe2cd8bdf2ce153b409b1330c0efa3ac8",
    "signature": "0xcc6c794c99461c2dfca2c4331db4116718a642d48dba9c47fc4631d8f80c64033b0aa656762cda933d2a54fcf56a2fc4bfcf8303d960511c7005d888d30cf85f1c",
    "signer": "0x1d868e2cc29848871636BdCF83a08A975835b6DD",
    "userId": "120328011"
  }
}