{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1512820",
    "entityType": "User",
    "nonce": "0x9aea6c22cb6656fd1f6b47524195244a234cd9579acca19e3b50249a3ba780ae",
    "signature": "0xd84aaa2fc9fa5b7c234d98a63b258e5b65a65b99626119ed8333331bcee6e23209e50bfdb50fb2489317eed16abf80ec43e2bdf8b2faffd5dd2df67b0bf7d0491b",
    "signer": "0x24844077bE6bb825c0548F36B4EFA030d05Ee1CD",
    "userId": "601282125"
  }
}