{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0xacf75c5802e772d7748de6e5c8a449a48b80f424991ea9c1528316c662ad000e",
    "signature": "0x847a9817fdb622cffedff97ccc9f75ae38375802f76d76735388e4001fedb66c1ebae8d5b0817b5ec9383cf06e9ad169c6b852ff890514bebd5a1713b614500e1b",
    "signer": "0x98b4E8c6a6759D7459ce01d67AfED67af27dEF23",
    "userId": "907489982"
  }
}