{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "41804",
    "entityType": "User",
    "nonce": "0xf99ec28db5d444cf6ac46c90f21812f42c106945113656624911106dffa58fff",
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    "signer": "0x337e8de6D2465f30fe8f318Df5bF139BFaBF7634",
    "userId": "256685174"
  }
}