{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "581802105",
    "entityType": "User",
    "nonce": "0x4528c7c9aaa294427d8c7c889546562f221cfc5a1001353a2f8001ad7fbbb496",
    "signature": "0x7e3d9f051a9fa0f885649a5b3252a3e451c3fd10eec214c00f17c6378b752bcf4c33fa980c9c7eae7e7b5e53b67c2f099e0d0ebf2e6d93b18caf9dd9f57728be1c",
    "signer": "0x8ED8606Ab8cF49801aEa2bf8fFD349E9c85bC6a0",
    "userId": "464330844"
  }
}