{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "456716469",
    "entityType": "User",
    "nonce": "0xa0b7bd86edc7a323a2da11a06ec0f825049c09777bc97bb8803167860310a9b4",
    "signature": "0xf1fd23518b3cc8265a9194ddc85c04c6709ff629bef59ac7cea71248f68354ca59a9a18c89679c0c148d2776da44a8ea925e5c14dfbba4edc8d35a7f140f5b081c",
    "signer": "0x94d1769762bc3a1e7DCd3e8a31C89Ff199833Da6",
    "userId": "715573876"
  }
}