{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "308641",
    "entityType": "User",
    "nonce": "0xd9c32cbe403038aa7d716ec9d1e14bf7182ac32a0987ed05cb2333d9ddc2909f",
    "signature": "0xe303073eff0795837abe6838f147db1c18388c3b0eca9a3b4558c47c1f8e94f34b439d545b94b1fd03224695b83df4307b94eac60da4f2fbfb4a9eb4cc036cba1b",
    "signer": "0x45c4f1dcE13eeF476C74C5758696D56137253980",
    "userId": "824478223"
  }
}