{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "71251085",
    "entityType": "User",
    "nonce": "0xfa9bbf50dc1230fe8711457eee63ddaaa72a5845d3c9c9207af8ee3db87e1d39",
    "signature": "0x89045a822318227e541ee5b675c24235f01b86970593155f12b77a7cdd9e29e02fdff1494027ec7baa85aeaaa2375e56bd9b8efc28280c98cbd5328f7cdd6e621b",
    "signer": "0x8FC10d55fc21a28Bb280730c2478a62165b9f75e",
    "userId": "728580279"
  }
}