{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "909451319",
    "entityType": "User",
    "nonce": "0x1e57e8a1459e0c8d60a66b4b5ae11bd7718cfbd8de5eaacb86b22d1b5df832d3",
    "signature": "0xbd8c60b7f3c13f2268be5b7b5ed9a650007857b07d686076fce0316f2c7d02754b2060ad7ca43df19359f6ffbf9b10a806b73a83432c2fe24246982bba832be21c",
    "signer": "0x7bF90aDB0D4f329e1dA9BB5123768023eD007adf",
    "userId": "111728084"
  }
}