{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "406225571",
    "entityType": "User",
    "nonce": "0x3584bb43c8f09d0132f05af8eac33e6bbd8ac7d17f449a263e1c9d35a94bf73f",
    "signature": "0x8a90c6a8c64cb19bb347f10ce9c4248b8c0c1f0eb2eaf364259e7928335a5c9361cb0bc43e8c411222a0c905077d0e7b003a5a243a3350f2c2b7a8661e99e4e41c",
    "signer": "0x34Cea527C1dc0575a5B686515aad0Bf8F3b5f97E",
    "userId": "13589021"
  }
}