{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "51",
    "entityType": "User",
    "nonce": "0x67554470fdc82e9ca6e8d85544067df0d8328764cf608ea9bfac60dfac437b68",
    "signature": "0x256fdeca5db942cc99afeec9714ba285fa815dd48b218e5bb1727c4870d3bed561ca2cbeea0006bfdccf19c9725e2eb682b1d392b5afa6a5b7e17f277eac4a9d1c",
    "signer": "0x11Fe1C6137F89eD65656FcB954A91979d039bf43",
    "userId": "383439538"
  }
}