{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "398267373",
    "entityType": "User",
    "nonce": "0x6538f591272db58f226fa0deb40a93df99d7c5529853c40738989c14cb8a8a51",
    "signature": "0x968e6339259a208fbe79f1f5f6a5a6a18ba6bc804ad9c7e721bfdfe7ff12772a296c3d0d101d6580fa16eb2b23f122ac3e8fc27e076988fda1adffd94d8ffdb11b",
    "signer": "0x6754A920da1003d0904BdFf228A6E217Cd12bF5E",
    "userId": "105562689"
  }
}