{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xa49d582d6e044c3eca70db1520842403db51b677dca4f4853113867b5f76492a",
    "signature": "0xc9d71b6e439be0ad37737803c77a109b6dd2540ee9676add441e7fa9949f80b34ab5fe6e0b949cb3c089f9b176dec5450f3020a58d848fb6cb27e68a93a876271c",
    "signer": "0x049050eB494d9756adB37E4Db8933967fedf2fA0",
    "userId": "989690973"
  }
}