{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xb52ce82572732599396ccfae29b815f43c488987d7400dba21434cfd429a776e",
    "signature": "0xd2090fdd63dd5764bb1c2e24d0e547848493446394d2096204d902a5de59071d763947288c8630f75709a836b12efa419e2898d63377f8606c961b8e47413c081b",
    "signer": "0x18caf18A1165251e9642F247971dA4D908C48217",
    "userId": "28995782"
  }
}