{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "874050367",
    "entityType": "User",
    "nonce": "0x7525a2a382309a3e0d6f176d934a3fc5fb93af631a18b7c5502dfe6af4673c87",
    "signature": "0xc4ddab9d14aedc831e2b6151a601bee31373444a29901ec652d3552c7b204ba9335f36cb7151ca1eeb043af17eca65aa7ca7509cc0ef1a6bb208bd5ed149c38a1c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}