{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xe0a0c214b597e2a3be8466876b1421d815b1cc2a6579b5365aa322d23e40c248",
    "signature": "0x19eca50e9d505f8364d436262d64ccb6d72b63af512f079c76dc2b8cb858b16519b021df2a8a477f4b11acd334a44e657086edd59c99cf8095d43c7dd26b325f1b",
    "signer": "0x9c3860443A17b3326308E6E90E9cA7835460e0b0",
    "userId": "898210232"
  }
}