{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "843",
    "entityType": "User",
    "nonce": "0xc574aee6b42d5176fd676f8629e639bf9be000f600f6d8aa5e866a9c7787a441",
    "signature": "0xfa7050f71868501acbb9dd44861571215ac5c83d012231c6d268cb64ec1c5a527b5894ba828c0cf438f33e86fca5567ee7263843df7d6d5ba6e82f7bf70c49d81c",
    "signer": "0x031768c05F8AC66fdb9B2516e50f2EBfEc351dfB",
    "userId": "403976571"
  }
}