{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "208887",
    "entityType": "User",
    "nonce": "0xc2e46874dd7e00cf438eac92d60e9a97e2570afbb359fa198434e20017c51e3e",
    "signature": "0x02bf5c8ee947f73543c1dc1a671abf4b5e9a5dafcf18ba2406004850e04427f3375c333104afb9030214ead4f892fc4325aa910307434e34f4906cfdcedee7741b",
    "signer": "0x647204eDe2dcB8e40793BB48e4bb4Be7ab706de5",
    "userId": "580720856"
  }
}