{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "252398720",
    "entityType": "User",
    "nonce": "0x3909c5604f3c7a46d4f127fd338ee5a6a4733d48faa1ecb62f3d16ee3f1dbed0",
    "signature": "0x2b505e3704428cb8bff1e31d8386f8d542f090a41609227454ffa3c38a91661356d26ffe9e7f4b006bb7e016a92a814fad0184264f89eec4cea00073867dbf041c",
    "signer": "0x5452f86EfcB1153FF9C10bdbe4103Ce25434D124",
    "userId": "620307004"
  }
}