{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "196608",
    "entityType": "User",
    "nonce": "0xc3ff4e79a014bf8919e3a855b959ea97b0c2bb303c21dfd92c06093a7f806961",
    "signature": "0xd12f38d77c8f3c7f448f84fd5a4e6029fdafc597f1ea76a96fa9c1fd4a45edb115ace297c2fe94658ef47f6bfcebeb055c908bf3b04c6c4e4291496b42924ab21c",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}