{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "311639",
    "entityType": "User",
    "nonce": "0x0e33fe1594bcec3560ba2f5fd41e4e8a6e3dcc9e4623b08352ba1a08498d0fce",
    "signature": "0x62852fcdc7e02a653b7e8a4ab6ca69827efd0b9fdd004da7ceedb385dbc0826d4f8fbae7fcea3f7bb510ffc62753f735d983beb44024cdea4047e7c579f9c3971b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}