{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "355814",
    "entityType": "User",
    "nonce": "0xf5e8ef1a3d515e917ad00f7dcb0f419ab9c6705585310ff3f21aea00cb4b9d48",
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    "signer": "0xDf2ffE41EC259B85B3F9C88700b293499D4Ae6C5",
    "userId": "339350040"
  }
}