{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "42815",
    "entityType": "User",
    "nonce": "0x9b98358323dfdb51e540c68e122aab973d675daf719cef4d69503c26ea7074ab",
    "signature": "0x0a8688362d510855a40362ba356c0c0de50ea30921b5c3bcbceded067449de63204f9665e2b3b04c668db19f6afed0a597302bb09a2a7f5e720328fd74248abe1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}