{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "345493",
    "entityType": "User",
    "nonce": "0xc58c835f68c35d1916a611266ed62c9fc8fb599519972810cb0638a9d07922ef",
    "signature": "0x8cd050241f74933189d489a7a89ee9b23e9e3f19b1468977b03569ae702cc65c75bf24226c8d094dfa807f656deb03b5ddf84c10afb0f62ee75a2a9a7d3b405e1b",
    "signer": "0x204E506f1D5498d2CABD41d2fc7a3078d5792835",
    "userId": "768479471"
  }
}