{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "350504932",
    "entityType": "User",
    "nonce": "0xc441f1d60ebe73fc03dc5d8d42f678ab7c2e938e71b4e37143411e296c14ca95",
    "signature": "0x7ad0044ff995bc3696e4d79a19ac5d84b288ac1ec6dd2df06ebd72107e7ae0e048f0f31e5a509223a007ae2dcb963849107f3d152b5ac6386a10882f3a1b06801b",
    "signer": "0x19d0188e073dC5C27C078d53C9C5510DAcEEAfaA",
    "userId": "921087253"
  }
}