{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "454094187",
    "entityType": "User",
    "nonce": "0xbc43f6fe2254aca55d76d5664eb0d692a8bdec4eba1c941aeb3429397e0421b5",
    "signature": "0x0c76e9b74e99b19b7d120d3c020fc4beb75dea75f9dc38b2c1e03b453370134530e243ff1581cd19744a35007c338217864909e67906888803aca783626777fa1c",
    "signer": "0x9FF2A7F5Fab732dA57359bb3eD63a95511bD1329",
    "userId": "67863854"
  }
}