{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb752f521369818c142993bf71c58c651d22f070059eb0f2aa74f74ca60f506ea",
    "signature": "0x2c8123b07e31f4a210a6970e2b4055a62b55ef01d2fd4224ead2cacd9e6780c857317bc26969ff33fca2a670e6880900be484eb8b52764a00f3960c75d942e3a1b",
    "signer": "0xae12381d94e24Ea1748819F9d981b419043D98c2",
    "userId": "764368248"
  }
}