{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "290685",
    "entityType": "User",
    "nonce": "0xdc6fd8672423aba52dd99e4eb9e2e07942dc2fc9a083031d6564def28c9bdefd",
    "signature": "0x68d7fe7e59c2b1987c0d5fcbc465ab8bd02a81212e02c6d45854cb23c7b777c938dfdf780f75f98e075b66291da2ba7dabb0fde70c839ecd882c82c7ae20928f1c",
    "signer": "0x408CbFDbc09C9aFB99Da5f010D04f50A190b83B6",
    "userId": "675830993"
  }
}