{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102308",
    "entityType": "User",
    "nonce": "0xa7fc5ac1db613857337cf6363e402fc5a00e6c00564c8e48bbf2ed2ac478831c",
    "signature": "0xf60559f53092137f008874a98a18b6fc83fe06b1424df3f59b50de12634f2e4f3e3110b291c646e9128aab8e6c53632e7c5e6934677659ce42a6d707b09a89801c",
    "signer": "0x4230116F60d3989D218B84425D3D1Dd6C85e1393",
    "userId": "86128800"
  }
}