{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "143665",
    "entityType": "User",
    "nonce": "0xb9fc17bf6efe5de2e840dce49d6938d1f76a81c11451a1edf4ca423a6a6c2d8e",
    "signature": "0x021e335e209ff626a32b9a90c9ff54b65588b5ccb2c85fb1340f33896d721bc9102b687eeaef483f9eaf6bb9bf3fc52e724848e59a73db436a40dc323ab5aaf71b",
    "signer": "0xa2DaB1ebF6D10325b0948C994b592F7abB2Df44C",
    "userId": "728570067"
  }
}