{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43309",
    "entityType": "User",
    "nonce": "0xa4ac8da539d0b087cd4bb08d0ea8e247ff4961f68a420d4f48b74a65ba40e779",
    "signature": "0x41829fedad0448938f05092afa8b2c0ed1fe74e4f073001c84f4cc16e1c9905833e02d2750408b0c66c49efc7ef818a7ec27e79f55c8159090c71b5f67cd529f1b",
    "signer": "0x5b223142a62b282D03fE47a56B10D12AeDEFcDe4",
    "userId": "155681527"
  }
}