{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x6a9cbb19b8f9adc4da57358f715d75ccfee5bbcf7d0a7db15cdba7ad937800d9",
    "signature": "0x2c97582baa151dd44ab058648fc290e33305cebfc6273ef44e78e610b5c35ab72bae64be522cd6956bc9f2ae16af463ba521f64a577e90a4280e5f9c4adb78621b",
    "signer": "0xC75a276D0a36850045510B0483E737bCDd1F5E9b",
    "userId": "588125677"
  }
}