{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "777109830",
    "entityType": "User",
    "nonce": "0xa30ccf0f7fe93b20776f4389086e2c9c844b0219b009b123a16602688d3b51e7",
    "signature": "0xbf11a64bf000c8fb608254849e016718ab46d23bad5d1eaa622e2daf51537f2171dca385bc8cc116a73c8a8ec1e53de1a2fc569bfe64aae9f2ea969ee17c27751b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}