{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xcd4d8468b0d13d2b4f7016c8a8f0fbbaff72da2ef4ceb907eb6275f90292197a",
    "signature": "0xd7fb9050566e6533c39fb480d59c7bb19d618e126eaddb2c9ded300b8a9807522f664d372c4f83ecbc76f43d8593166937755ef08b45bf452b3077d0e2077f7f1c",
    "signer": "0x515399926c2FCd6970811C1337c62fF3DDa03174",
    "userId": "754088057"
  }
}