{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xefd4fc89282b64c6744146914130aff8c4ae9659b992672c683864200aa8da6e",
    "signature": "0xcf04957322371aaffb6d15771b4017f1fd84f586d3428e685d14dc8cdb33f24a4c9f6420948df05c3056bce2784cb930edc42a7a5147b8204f895a49106cc7031c",
    "signer": "0xF9226603cF4c633E4AEBF2321Eb6961D6Ed7B3e8",
    "userId": "937990376"
  }
}