{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "863774823",
    "entityType": "User",
    "nonce": "0x28284dbe20e51e91ae648d5a25e310b0b11f477d48d54baa031b9ca7778537eb",
    "signature": "0xdb1499bd0cf3919d4fa4e5766cd8968dd2f1e368ac170f1a7ffea1412c9be0900ca5618e160fbf32ffbb332a73ac89b1ed8bbc60a42d2eb0da476a9d8316e3941b",
    "signer": "0x8FfE4D68AfdF34240202742331b49cb462b7e26C",
    "userId": "660197861"
  }
}