{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x7c9013590492b0fee9c157a40707b6a8c3590e5fbed8141cd9b53fee655d23cf",
    "signature": "0x0308704fcdce39c22897553dd3616922c958a21164a98216afd11d5cf94746a3405985b3de2b64fc10a666a839703997b1ebeab3ecc4c4ff960ae0a868ead5bf1c",
    "signer": "0x2a71651e287eF4ec0Bf7DaeF3A4A8c8644e65b30",
    "userId": "426472895"
  }
}