{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1710829",
    "entityType": "User",
    "nonce": "0x9f17ecde5cbf42011bea231ae2e832467d2f51f8917f6f9ace0c37e357e7722b",
    "signature": "0xb3fcab2d35591c3ce217142b849202d81e591cfe3714aa9d8ade136088833f7816f5c2b41956c22ee13e7872d0580747e0accf38aa56a186d531c6dd3ad6beb11c",
    "signer": "0xb9160bee52F73DAB98D7cB3210d24Be59194CaC4",
    "userId": "319969"
  }
}