{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "313260",
    "entityType": "User",
    "nonce": "0x8d66ae3dab5d5d7b52afe882e44793350c446442bc455e621e4a630cff5abb9b",
    "signature": "0x773e5b450c7f93f4378be39b16e8709cb1c9d69c58f0fc5684e21957cc2120bf31aed05eddaa79f27b21d8851e48b02debdfeb06ae8029dd9b331e17ba1202031b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}