{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "681470681",
    "entityType": "User",
    "nonce": "0xf455880d14409aeb675f05abbf0c2b9345e3e0f64d2169fdffef09ba1d7723d8",
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    "signer": "0x1815853A3D3f5b8c2490bD12f96176a3a4Db22b1",
    "userId": "957405762"
  }
}