{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0272dedbd73c9a8c40f35363f159bb9484ef57bda60583c0818b8cd8612e470c",
    "signature": "0xeb603d9978ef1fb22085902ffa9c1db1d41f5d86741f020098d6b52599363d0877ff5e7043a50b6cb7eb27f433749f0d0ddb7f228ca2945883032e0f28e8d4691b",
    "signer": "0x983820df6193710AE73868f6b05d65D5F2ED6402",
    "userId": "508601064"
  }
}