{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "605067669",
    "entityType": "User",
    "nonce": "0xda0019297dab36873df28b7a21b0307c9bf88a1ded87b6cb3523b389074eff31",
    "signature": "0x3d6e8d9e1fe78464994a87198f4ec038a77717d545def5e33942fdf19fa80f5b16e8c4974589842c3056396bbaef5935048a4b7577fbddc53d3f00eb680b05881c",
    "signer": "0x9149C438b2FBf68d0e846EEfE2E6B19be686Af42",
    "userId": "843"
  }
}