{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "17021",
    "entityType": "User",
    "nonce": "0x7f3582ca76c8e9f1c3008267d5852e07c156cccac2553932287f4c766e203094",
    "signature": "0x3159c3579b3365447b6889d7a161dce0d88140e152f8c3c5c1d5c65bce94465f20d356071a83b575c162a7e967d4f47d2cd6a320df2fc6f1361368f8deab12a21b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}