{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "209405413",
    "entityType": "User",
    "nonce": "0x8b99a17447c79cb01159f19d745367436e1156e6fcb6a98aed4fe62e9882d6fa",
    "signature": "0xf22822784f416defaf5f8b2be6683ed14bd8b0bdd6ed61fbb39ed919bba921a86c1b0a29d5b566aa9c24ba8e367b7ccd9c766724ae05cabc3da8239eca9421f31c",
    "signer": "0xAd15470171ba4f01ad3C714600D9A7E9aE62485C",
    "userId": "714646433"
  }
}