{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12465",
    "entityType": "User",
    "nonce": "0xe930d74a67b48c5f072ecff670618b52e9b6ccfc4818bfd8c8d07b2790f69b75",
    "signature": "0xe225f1e600dbfde5e80859a7b1d256d986f94bf7cdc3da67d6d6fc99324cd31c38177cfb8a8a56f89aaf79a1530829baf0317d1c2b2ebe8a61b55157be7f06ec1c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}