{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "870665506",
    "entityType": "User",
    "nonce": "0x5628e5f403191c0a8a9cb0ccf7ce6ef684f268c75afd8b49a97bd8ab56eb05fd",
    "signature": "0x552f80c30300b3fd81901c6c501b98b350cb61d446b28c71b95b08ad8d70379523406ae23dde2c8feb368aa9dfc3931999df55d1523509fc4efe0ab7ab37c4c71c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}