{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "375396",
    "entityType": "User",
    "nonce": "0x9b6324be59138be2c030fe8d25ffb32b86bb4325103fbea5a948b82e5e42ce09",
    "signature": "0xfdacfe22c99d0527ad598c24a6d0bc89f4152900e7568732bc5b6f9b3c7ff59a7c4eaab453d87cc7829e7eac6114743ea02c5148a920b50847c2f96847fc7de31c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}