{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "428192787",
    "entityType": "User",
    "nonce": "0x2ba23ff41c4a04a3b0b3ef9ada980e03d8ce81d7f66d990e72f6bba7fa6279de",
    "signature": "0x597d4a9d2637d48b87d07b05ad6c593f8a5dc4a9e1ac04a2d4bad6c31942a033208296cc76d3fdc59b1a630f9b5fe8c339064fc9dc9ea70e9df78662ff6002f11c",
    "signer": "0xb7C7a8D9d12EBd1Cd438cB065E97280E6D7e912A",
    "userId": "984691913"
  }
}