{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280208",
    "entityType": "User",
    "nonce": "0xb3ed2f1275f15ffa4b994300d30bb01661a3b6abbe07f52f3000607bb712b30d",
    "signature": "0xc42220e312c03cf035c524a99b9bd30b91d74ebbbd55330ec9e96bcf1c46fec8037bb7fa817de7a6acdbfb0cf38f457e58bfcbd578ff120f28fb7e2c57f9f8d71c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}