{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "12171",
    "entityType": "User",
    "nonce": "0x6b3e0020435d779ad7cc7d65cc0243a1c777b2a6164d7f8cf15fe863657f26a7",
    "signature": "0xfdf6ee478914c244f7d8dc422638c4bd7ee0712adc8059a9e6d1a869fe03f80501cd5f9042bec804b4dec12cf14f38cc25d4a3ce0f90fd64b2f66cfbfaf896441c",
    "signer": "0x2E421648958D2Eca9f5AA96E378e89773A0f1Cc8",
    "userId": "683894975"
  }
}