{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "393873",
    "entityType": "User",
    "nonce": "0x1a5cfa35f1cb3fbec73f4ccaa6da77502e685cee162644e66717182d467db64e",
    "signature": "0xe73bad2fba300bc7ff476f8138a4efed55cb3dcefdd3dbd7c4e15b5a2f76d81e27c927661a7d795d681283d09899919fce05634bca313842f665daa3c6276db61c",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}