{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "16401",
    "entityType": "User",
    "nonce": "0xb4fa173c9ce6a08e58dd46065b18c5183d5349ecdbe9a530e388ad62daf66183",
    "signature": "0xaae1c6329da04406f72a6c65acb3b4dfb3cf0a08c9e98c639d8c9e2d42d225a17b60c69c75de0d27e55eb663f5e931a237d68bcd51d885a212eb84a4c4fef75c1c",
    "signer": "0x94e0dDC50579175818AaCFBC9aba8B065fEf2a55",
    "userId": "460147282"
  }
}