{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "253994",
    "entityType": "User",
    "nonce": "0x71682d654af1d494467a312a1cbedd592223adc1b2217e512b3170dbb6eaadfb",
    "signature": "0xc644f5105fb1973e8eda3653c2ee0fbaa48c4c2bb45a947a8144c1d21922608f6b7cef1fdf0905b356f100d9f2862e8cb4fa3d8de5daa0dc19105124c7ca07171b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}