{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "155973826",
    "entityType": "User",
    "nonce": "0xddda470343d4600ea20c798411cc2f0669c22e7ed6b943d930716d3cb1328c20",
    "signature": "0x88efeb4f6068ad1bb8f4ced3aef4c7aae51511217af9b74463e44152a3f0177130efa372323bf743d9c2caa9febd45c7ffb3b6b0f84cc936175ae96f04ec28091c",
    "signer": "0xe78f4db0d7A07c6560894af54fAac97902D8d04b",
    "userId": "406109114"
  }
}