{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "881446128",
    "entityType": "User",
    "nonce": "0x6bbf1ca63f41fbfecb437ce5e75c018397267c82a42bed92bf50ce48f4175db3",
    "signature": "0x67bf8260ee01e1341e04e6bf7d8a987af628db96866bb0521a93ae0f8853d22f7de04249d6857d61d62081dd7f7f6065e9dc463574168cd5fb61116c6a9ee2fe1c",
    "signer": "0xA27B00F57fC7B3E81c4d7C4919aCec97E1fCf667",
    "userId": "329513359"
  }
}