{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "297573",
    "entityType": "User",
    "nonce": "0xb1970b8b1ea748f053808f5db4940115c9b325324ed5457a2e2afaab4fdb9d5d",
    "signature": "0xd8959ce023cbce0973373377b90fe688bfeea9943feb27c8db26ae777d11c6051c6e66ffd6b92dd355da76e829a461c1d7218dcdd4928641438922abff2d6dc91b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}