{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "607647194",
    "entityType": "User",
    "nonce": "0x27d660a337f8ed3a61ee7203f40c614adc2ec51699e5c34d8cfe1cb84b6d11c0",
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    "signer": "0xD82Bd74003e6b0E270326eacfb14fa0372EC70D1",
    "userId": "943263428"
  }
}