{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x6fee96ceafe933718210a579b9149b6c553ee2a7cf23d844a65ddaa202dd8357",
    "signature": "0x3e147b280265ffe7d6ec4662db6cc4ea846e8a918ced4f6c93ca2c6cda27bc2d2bf30442d1b50ebff5214d41531f18088ab1ed3a54c3ea72bf5bb4e843e243e01b",
    "signer": "0x75E4B0AF28F84629E6Bdaf40E9d26Fad48f00cE1",
    "userId": "783920934"
  }
}