{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "943748539",
    "entityType": "User",
    "nonce": "0xcbfd8c129084caacc5f4890e01344ac2d28c45d484070067cb6d9aac33021af8",
    "signature": "0x8f52846e435580ee0b7cc7cc61d8fbbdba2f8d2889f81865de8494ec1b30b4231d8a2a830e3eaba9c0fd9f52888a092bc23a73171119dfabb82a552957e9269b1c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}