{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1687304",
    "entityType": "User",
    "nonce": "0x91031b1679e84866100fc039ed4e67cc4ced08346fd70923486699fd514ab643",
    "signature": "0x7246c2b04dcab3c087f38973c48cf33d14211a43ed8d23e3387b1d5dcb724b4513f122b37a640858efa6edc7a9e9934623ed39c4e884da068bc69b7381c863021b",
    "signer": "0xf9Bf82B2ecB609ee37250F00C0835d529331385D",
    "userId": "654530894"
  }
}