{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x4cf1603988f2d352d91dcb09276dc2691cbdc7ecf62a0a19cd87d082c20ad3d3",
    "signature": "0x9cdc16a36f1f1afe0c78dee4a194e0d3010ce13122fb624f0ea8fb1bce7ce3a96f1014abb39ef00052bd3f679c99c3943518166c6281b5121dac48f8e9d4ef9c1b",
    "signer": "0x80BaBdd7604de656E45b52EFA056548D7C078B36",
    "userId": "790313179"
  }
}