{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa57172ffbfb106c20422d3ca45f210329a690c0954d57e3ed3484301d3ed5405",
    "signature": "0x0ff90b01202c2c91ce792fb71bc87e549d557c5e9a87bfafc49490e12bfad4452ddc8564838ae819a673a54c413225c75b8eab1f9abc8488888ee2c465490f271c",
    "signer": "0x88DE6E278423E69808AB03c717d8847C333CD1B6",
    "userId": "959617631"
  }
}