{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454387616",
    "entityType": "User",
    "nonce": "0x10aa4bfe0d92de12cd4620154325abe17769cdbeb585a7ce05eb35646b42cbc1",
    "signature": "0xfaca780530c2a7b3e3c11d1b65c6adcf915dcb9067075ab66b49d24060718c290b8369d30c3187ceb244c245435603f1e8d94e05759c595127601bce954acdc01c",
    "signer": "0x97Ce19D122F5b51231cF4DBbd25Ac36CBDd6CACa",
    "userId": "426864186"
  }
}