{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "280208",
    "entityType": "User",
    "nonce": "0xd8028f8285cb6886f441bd8e6ea3db8165cf44010ae9bc8f0b76d9e64051eb5f",
    "signature": "0xf1ecfba42746e3dbb4e32a7840bb60955501f47784526f0cc496c4718e3273157508f9c60ca6708ad297271fc5ef7d3bad607ba2d3823ca50f34dce119aa93091c",
    "signer": "0xD24271e3B8CCFB603860EA392E94eD5AE2538703",
    "userId": "456716469"
  }
}