{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x0f8b58f7e46f0a691dcd539e30158ba88ff32d9da96bb4656c2e539d0847307a",
    "signature": "0xe46c4fc0c613b507c0d83dd3274b7c9eced96aebfc91b3a9a0ca27652d0ded086ebc50dad16611b7bf95a997edbcf03412a0023eb1b842adf09e3eb4a33de6131b",
    "signer": "0xA0a3b0643c7D9Cd8AE5388d6c2D6E46b6aD4057A",
    "userId": "980741763"
  }
}