{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "402520233",
    "entityType": "User",
    "nonce": "0xd9d938873504dff625611e607e3a663ab94923d83c88225f715d37612ecfe78b",
    "signature": "0x3c8a387f507dd6494ddb424ed34b850acffd491c15d2343b39fb100e6f3017f971feecd79c29044665ced44f7e0b788aeb5bf6915717d96e965a64663074de091c",
    "signer": "0x243A439c272133AEEE0073AF4986dE391C430866",
    "userId": "77551267"
  }
}