{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "624",
    "entityType": "User",
    "nonce": "0xf061b70ff20755a76875e2462e65ea9ffa29a41c96882970761c36fbae1c5cf3",
    "signature": "0xe1c745bd7ca69e70095f990705c01202dd639d225f6a68c5b09bc1d5ea9209d9595e4064f653d65060ca5a7de7df3224080f3b87c329adb396124b8aca9162d11c",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}