{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1322149",
    "entityType": "User",
    "nonce": "0x442132a7f6b0d2b66beabd44a609acea6cce7cc2d20632bad7a466b063063674",
    "signature": "0xef332eccee670baf20ae4a27f0f255786185b939e569332f5a942bff22176a7403dc7c0be74c79bfa5f02edcc7b555db458e94958d240799ccb0b00409ef25a91c",
    "signer": "0x4Ff77Da6D5C7286ea15F7F94FdCC04a641dE9a27",
    "userId": "512734349"
  }
}