{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143958",
    "entityType": "User",
    "nonce": "0x89a9f4346cfe6cc5254843d9f51fa686805bef20f766e780af8e4265beffa0a1",
    "signature": "0x9d6ff597820b46d9618a82ff3103c81a72082ba48c48c10f31efb7deeca67c034c5430c0df0da9308ec2a9d5b3922cdc81cfd808cfff6cc8b05db1068774a90a1b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}