{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "304048",
    "entityType": "User",
    "nonce": "0xddc9c2fa982228f60cbb288a8d3a7485b5bc9b24da051a59ae965b71a87278d6",
    "signature": "0x891426183f5708aed2d10d23c13f2644cd46b839be31e8f5878a22a206756bf2641e515965deeafff89ff747d3015b06d9c5f790f80d1bbf84e8b5bd5c51fbbb1b",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}