{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "43138",
    "entityType": "User",
    "nonce": "0x2d75f946a27f1251d6c2567c1aa42b4b9f27522144f8e2c6e4307d8978015afc",
    "signature": "0xbcce014d6bd07e4aaf543d19b6de27a4252eeef88f138a65fd1ea333d0a1c03105c50b7359c84ccb86b3047f7bb338e2050529761a5232a874d48db0a363827d1c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}