{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "1252124",
    "entityType": "User",
    "nonce": "0x75baf4663400ce77b1c2a9dcca00026328da89ca9987908d7f1536070b3e7d9c",
    "signature": "0xbfee8df3a64685589e04dbb4b53aa6fe6763c0d0cf4f74075a8adbf5f35f786611ec964350a72f19144a4345eee8cf88624464fe17b5a9568774ef50ca5893841c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}