{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "511379863",
    "entityType": "User",
    "nonce": "0x62dff59b872fdec5a098e6920f33a2235a309f6d51132e7c23c9e52e8209a9bc",
    "signature": "0x5a4d07ff4943377a2c8b16df9497e670a8648c16000e65d55c77c025faa177ef3210a6ee98207d9567eb19adb3c771de29b08020372da9c3a438145c8c09dbd31b",
    "signer": "0x7604Fc1Df216CC6E330cCbC9802aFa3E13F8EBE9",
    "userId": "830022953"
  }
}