{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "321073612",
    "entityType": "User",
    "nonce": "0x07d9174f2134ac21b633530351d1a8ec1565de4fc3b38be726003046b5e99682",
    "signature": "0xbe713742bc5e32d54c2fc97101cc9506bc16eb7dde7e54f81385fc6f6b958297190dcc8824b9ec9a813d76b901c06c56bebaa4eb5e2333faba3b0ebe8213d5ba1b",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}