{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "371070",
    "entityType": "User",
    "nonce": "0x4d90b368bf783920da1ec441649b257c85a1429e363b418ba7cfcbf2735d19fe",
    "signature": "0xf1e712295a029db11b3db411188e966973058f97855eff082935ec7954da7f89374526c098f7e32ada510fcae8018cefe6021aaf3df04c2c93cd12b87a6d96f01c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}