{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "838752772",
    "entityType": "User",
    "nonce": "0x66b6300edbe59376d618a12402ba04d43f25fb453dee34790118c18d1df754c0",
    "signature": "0x4fd02f424ddd6eabab87d499e14b08581b15ca4ab6761986198185514fffadca173ae0f109c1219144ab3960b0977948da1af1ae50434f295c57530e8961dfe81c",
    "signer": "0x481d41B4b34069e19EDC206C160447ebA0841f6F",
    "userId": "854614078"
  }
}