{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "650714154",
    "entityType": "User",
    "nonce": "0xe535b806195973c5bb72bf37ca8c21ad7b89788e36cb769e538367fecb8856e2",
    "signature": "0xe2c4fb87ce49ff54b4912fc47af351108c7cee5cdc5977e0838a11f9490376e001921e7e7cbc6bb962f9b8a81f18dc0054c149ea03dbf71e56c57daab89efa9e1c",
    "signer": "0xF7628Ea36C0C266E289b7538b033fB949A6C31ff",
    "userId": "386745392"
  }
}