{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x5b389117e75c17b31ba5c43a49771c805dcc4402e4dc5367d4067176d6559b1f",
    "signature": "0xe5cc5e9026a0caabd4fea538b984ba48e447cbc73d7dca844d4e3cfa9b9136526015d040d0765b9ce9f7b0834c1e3d7d9722523862cc8458709741ffa76c9a521c",
    "signer": "0x881a4C74eaE2841838dfF35f4C094176BAF9239A",
    "userId": "920253243"
  }
}