{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "751129036",
    "entityType": "User",
    "nonce": "0xb5585fe8e5d1215593e91f6b1b8f00cd401dca1d64dd618d85fd023e3ff9f542",
    "signature": "0xa9b83004fd07c41728b2b1e90952ec44a3776b3d1ce1064c2290e9ae26de0c5800ecfab95b0d4cd9047b5ca20811f51fc700785ce13950651183f7762d1492401b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}