{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "827124668",
    "entityType": "User",
    "nonce": "0x5a1a378712efdf2bf4a39051934eecbe1b9ae083ae1b10f7678cffb2d06f91e1",
    "signature": "0x9ab66dd0dd6e38d7e0dee630b36412fef6c094e46896c9ea5aea65f2704d510c196dba50e911e9e2cde489cb6fa347a0f3d605ed5aa13ed7437efbdb20e0eb571b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}