{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "283478",
    "entityType": "User",
    "nonce": "0xf9fdd3d6335bbfa8a872d24d0931cc135268bacf67125728bc1a4a13a4fbc073",
    "signature": "0xb6c6cc99600afd97cd486fef97037d208bdcd4978b10da29f3913930de0c2b5516cf629e928450431fb9826fe7f244f279c27cdc49eaeee6ad4afd32e16053d01c",
    "signer": "0xdEc12eC3F7972dB51907501aF18eb17FBa37a413",
    "userId": "211416595"
  }
}