{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "136844578",
    "entityType": "User",
    "nonce": "0x9a4f20d336bf0613ebe0dc0fcb7d3082dd74f5311074516d6c8a716035f77a17",
    "signature": "0x93568b014d28b9dfe1dbaf2c47bbe7f4198d1c0a7ba5afa1050d4ca1e440b1d9786624ff095958242519374036d5f126fa8a9ffdaa1d8b09a5420ad0af105bef1c",
    "signer": "0xDDCce44d487ED1f7297d836241df35AAB6D867b0",
    "userId": "22610281"
  }
}