{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "233434",
    "entityType": "User",
    "nonce": "0xe28946e71c2259a08e51ff08a24e383bd6ad6791dfd09b02e2f1528b26cd3c0f",
    "signature": "0x54bdb809738f8bd05a54baa53367e94c2ca47c04f87b3d367a95390e05368fd17931ac3d35d96cffc694118a25eb8ae18dbbf8e334181da10059bed250687d131b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}