{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "3803",
    "entityType": "User",
    "nonce": "0x0919d8323b09b2db82e6a51d34088301c5b6370177ee1682479addc81057aa16",
    "signature": "0x915fcd77c794d6c93e90fdc7c5efde0f44f6bac8d5fa2e13082e369132f2c7797bfbd4a7ad0c40f3817a67ddb79a0dd2a3e31380df379e2ca78a28fd4764ff541c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}