{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "50406",
    "entityType": "User",
    "nonce": "0x53b03fdb915a58c8b066177f9dba9fac85ba6fb7152ed44058c3d59431b72fa5",
    "signature": "0x673055b7a62b3c15152186c96bcc3019be955171fb1de668969a9ca36c74b65d0d2eb810534959972e9619aa5f1b3e8d37b55fa782d011a60eb2d459822291061c",
    "signer": "0x07691D0C34E03020A13BE4B5a411B64CcFff5556",
    "userId": "9014"
  }
}