{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "294330",
    "entityType": "User",
    "nonce": "0x64547cd35ce6662fc0e856c2b0397b07db54ddfa8c650f31f0a539f10921ce52",
    "signature": "0xdcefda7753b55612a4030ab4fd523f1f8030d6fe5532be3cc79afee74a2d121355bde46bb4730e8d8db5954f022e67f9e6f6a7a3a98ae8ce1a130cfb2fd908a91c",
    "signer": "0x474B8467757bEdBa76afC2394cfCb801C991B143",
    "userId": "815537464"
  }
}