{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "854498636",
    "entityType": "User",
    "nonce": "0x721e9c8bad45c7394a09d96246a6a7f2d11d22e8fc0a966c3d0a086281ee0601",
    "signature": "0x9884ee35b529fe07433d0d3cc9f0b31b329e3462ef0630961e839ae0364518c654aa754b396270a71ba55ce7a66d0742ab1ea6f51263255672d15159bbe83d8b1c",
    "signer": "0xE69EE1e71C27cDfa05141f1DCE82bF0231AD05f1",
    "userId": "933842159"
  }
}