{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "904709618",
    "entityType": "User",
    "nonce": "0xe5d90fbc9cd9679761c94e01741530d67d6eae9fb40f406cba393b7f65cfa9bd",
    "signature": "0xdf6e0726fc6ba182e42575c85c4d2ba1deebae5eda0455d7bc586a691699a91d034d49ff05635775486e6f3da0c93bb1699ae02c0c10834f976804249c2a3ebe1b",
    "signer": "0x4E3828bc809fb5B9deb81fa536cF73Dd5bF4eeB2",
    "userId": "185184169"
  }
}