{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "743149",
    "entityType": "User",
    "nonce": "0x8c7feb91671692a9c195a410095ec83732527e4e1183b049ac873f07843a5640",
    "signature": "0x1d9349365c2bd00e6d5ea679f399e863b83647bcf30c02068d372cc3f91c49ca45ae86c6129f8d4ddc1570afe4576c1fad742844ce28943c45005786d859112c1c",
    "signer": "0x262a2A1c96da0dFD6f33595c8D775BefA860d02e",
    "userId": "486490947"
  }
}