{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "102818609",
    "entityType": "User",
    "nonce": "0x815342d44db0b70a056af9ba4211440cd3e86f8feab9bf2c0e53607d61d653bc",
    "signature": "0xadded1e5a014aa15382ee3ba9a6e8eb982dbd7dbb1fdedbb44163fe535c9ade8683b4b87f8e7e24360cb253501e101a72b970467f8b7ba84514cb15f709f29571b",
    "signer": "0xC56E1ccbA93c1E645e5F27Bf8A5ca13eB7A5eEbe",
    "userId": "335878078"
  }
}