{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "121646",
    "entityType": "User",
    "nonce": "0xf04fdea546242c4043abd5c100d134012dae26e6e99b007f365fba96b95bfbf8",
    "signature": "0x09cb5a168dd191fd5ca2a22a9230d6c8b62418ffdf6c53cd851a6fd9a616a3b02073cafdd4b67ea75f179f7a4cec3f63cab538b1d2668b985ea2ab3ec366b6001b",
    "signer": "0x6818B889bFEAe14D2ADdaC4dBF0eAe75779d7Ac4",
    "userId": "341292657"
  }
}