{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "670",
    "entityType": "User",
    "nonce": "0xe7aea217de3682bf51f9a9cac4f58d8a5d74971ec6b9e8ba636f9b345f40db03",
    "signature": "0x314925d43b933f7666eb53c6c583ef737ee5ab7b34d8aa9b6daa902ca64e2a093616d8460f7778486f0a425f3169a720d7407731eafac1e1fc8818a8f1e20f041c",
    "signer": "0xAaC77705f5f6bd787D8581c36Ddaf7c0c7AE3370",
    "userId": "827420993"
  }
}